WHAT'S NEW: What is new in the Freshwater Fishes of Mexico.


What is new?


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New fish pictures:

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New fish pictures:

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New fish pictures:

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New fish pictures:
Rheoheros coeruleus, Pair with fry (Juan Miguel Artigas Azas)
Rheoheros coeruleus, Female with fry (Juan Miguel Artigas Azas)
Rheoheros coeruleus, Female with fry (Juan Miguel Artigas Azas)
Rheoheros coeruleus, Female with fry (Juan Miguel Artigas Azas)
Rheoheros coeruleus, Female with fry (Juan Miguel Artigas Azas)
Rheoheros coeruleus, Female with fry (Juan Miguel Artigas Azas)

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New fish pictures:
Thorichthys socolofi, Female with fry (Juan Miguel Artigas Azas)
Thorichthys socolofi, Female with fry (Juan Miguel Artigas Azas)
Thorichthys socolofi, Female with fry (Juan Miguel Artigas Azas)
Thorichthys socolofi, Pair with fry (Juan Miguel Artigas Azas)
Thorichthys socolofi, Pair with fry (Juan Miguel Artigas Azas)
Thorichthys socolofi, Female with fry (Juan Miguel Artigas Azas)
Thorichthys socolofi, Pair with fry (Juan Miguel Artigas Azas)

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New fish pictures:
Chuco intermedium, Adult in Rio Tulija (Juan Miguel Artigas Azas)
Chuco intermedium, Female with fry (Juan Miguel Artigas Azas)
Chuco intermedium, Female with fry (Juan Miguel Artigas Azas)
Chuco intermedium, Female with fry (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:

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New fish pictures:
Priapella lacandonae, Male in Rio Tulija (Juan Miguel Artigas Azas)

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New fish pictures:
Xiphophorus hellerii, Male in Rio Tulija (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:

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New fish pictures:

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New fish pictures:

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New fish pictures:
Chuco intermedium, Female with fry (Juan Miguel Artigas Azas)

New habitat pictures:

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New fish pictures:


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Updated species profile for:

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Published species profiles:

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Published species profiles:

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Updated species profile for:
Algansea avia (Barbour & Miller, 1978) (Juan Miguel Artigas Azas)

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Updated species profile for:

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Published locality profile:

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Published locality profile:

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Published locality profile:
Mezquital Puente Pino Suarez [Durango] (Juan Miguel Artigas Azas)

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Published locality profile:

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Published locality profile:
Mezquital Laguna Seca [Durango] (Juan Miguel Artigas Azas)

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Published locality profile:
Mezquital El Toboso [Durango] (Juan Miguel Artigas Azas)

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Published locality profile:
Mezquital Ojo Garabato [Durango] (Juan Miguel Artigas Azas)

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Published locality profile:
Nazas Balneario La Concha [Durango] (Juan Miguel Artigas Azas)

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Published locality profile:
Grande Baños de San Diego [Chihuahua] (Juan Miguel Artigas Azas)

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Published locality profile:

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Published locality profile:
Grande Ojo de San Gregorio [Chihuahua] (Juan Miguel Artigas Azas)

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Published locality profile:
Grande Ojo de Dolores [Chihuahua] (Juan Miguel Artigas Azas)

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Published locality profile:

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Published locality profile:
Bajio Quelitos Charco Azul [Nuevo León] (Juan Miguel Artigas Azas)

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Published locality profile:

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Updated species profile for:
Hybopsis cumingii (Günther, 1868) (Juan Miguel Artigas Azas)

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Updated species profile for:
Hybopsis boucardi (Günther, 1868) (Juan Miguel Artigas Azas)

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Updated species profile for:

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Published species profiles:

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Updated species profile for:

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New fish pictures:

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References for localities

Localities assigned (and mapped) to species in their profiles now show the reference that we use for the assignment, be a picture at the locality, a video, a reference, or a museum collection record. In this way, we can improve the soundness of the data. In a similar way, the localities profiles show an option to list the species by reference, which in the same manner shows the references for the assignment of a species to the given locality (Juan Miguel Artigas Azas).


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Published species profiles:
Gambusia alvarezi Hubbs & Springer, 1957 (Juan Miguel Artigas Azas)

New fish pictures:
Gambusia alvarezi, Male chasing female (Juan Miguel Artigas Azas)
Gambusia alvarezi, Bluish female (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:
Xenotoca melanosoma, Adult male (Juan Miguel Artigas Azas)
Xenotoca melanosoma, Adult female (Juan Miguel Artigas Azas)

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New fish pictures:
Gambusia hurtadoi, Pregnant female (Juan Miguel Artigas Azas)

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Published species profiles:
Gambusia regani Hubbs, 1926 (Juan Miguel Artigas Azas)

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New fish pictures:
Vieja zonata, Larvae (Rubén Alonso Contreras Tapia)
Vieja zonata, Larvae (Rubén Alonso Contreras Tapia)
Oscura heterospila, Larvae (Rubén Alonso Contreras Tapia)

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Updated species profile for:

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Published species profiles:

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Updated species profile for:
Anableps dowii Gill, 1861 (Juan Miguel Artigas Azas)

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Updated species profile for:
Gambusia alvarezi Hubbs & Springer, 1957 (Juan Miguel Artigas Azas)

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Updated species profile for:
Goodea atripinnis Jordan, 1880 (Juan Miguel Artigas Azas)

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Updated species profile for:
Chirostoma jordani Woolman, 1894 (Juan Miguel Artigas Azas)

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Updated species profile for:
Carlhubbsia kidderi (Hubbs, 1936) (Juan Miguel Artigas Azas)


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New fish pictures:
Chirostoma mezquital, Adult in aquarium (Juan Miguel Artigas Azas)

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New fish pictures:
Xiphophorus sp. 'regio', Male in habitat (Manuel Salazar González)

New graphic:
Illustration: Xiphophorus sp. 'regio', Diagram of the gonopodium (Manuel Salazar González)


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New fish pictures:

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New fish pictures:
Gambusia senilis, Freshly collected male (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:

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New fish pictures:

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New fish pictures:
Gila conspersa, Freshly collected adult (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:

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New fish pictures:

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New fish pictures:

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New fish pictures:
Gambusia zarskei, Freshly collected male (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:
Gila conspersa, Adult in habitat (Juan Miguel Artigas Azas)

New habitat pictures:

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New fish pictures:
Campostoma ornatum, Adult in habitat (Juan Miguel Artigas Azas)
Campostoma ornatum, Adult in habitat (Juan Miguel Artigas Azas)
Campostoma ornatum, Adult in habitat (Juan Miguel Artigas Azas)

New habitat pictures:

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New fish pictures:

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New fish pictures:

New habitat pictures:
Bajio Quelitos: Charco Azul, Charco Azul (Juan Miguel Artigas Azas)

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New fish pictures:
Cyprinodon nazas, Male in habitat (Juan Miguel Artigas Azas)
Cyprinodon nazas, Male in habitat (Juan Miguel Artigas Azas)

New habitat pictures:

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New fish pictures:
Cyprinodon nazas, Male in habitat (Juan Miguel Artigas Azas)
Cyprinodon nazas, Female in habitat (Juan Miguel Artigas Azas)
Cyprinodon nazas, Male in habitat (Juan Miguel Artigas Azas)

New habitat pictures:

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New fish pictures:
Cyprinodon macrolepis, Pair spawning (Juan Miguel Artigas Azas)

New habitat pictures:
Grande: Ojo de Dolores, Ojo de dolores (Juan Miguel Artigas Azas)
Grande: Ojo de Dolores, Aquatic plants (Juan Miguel Artigas Azas)

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New fish pictures:

New habitat pictures:


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New fish pictures:

New habitat pictures:

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New fish pictures:

New habitat pictures:

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New fish pictures:

New habitat pictures:
Nazas: Los Alamos, Los Alamos River (Juan Miguel Artigas Azas)
Nazas: Los Alamos, Los Alamos River (Juan Miguel Artigas Azas)

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New fish pictures:
Cyprinella xanthicara, Adult in habitat (Juan Miguel Artigas Azas)

New habitat pictures:
Mezquital: Ojo Garabato, 27 de Noviembre (Juan Miguel Artigas Azas)

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New fish pictures:
Gambusia marshi, Female in habitat (Juan Miguel Artigas Azas)

New habitat pictures:
Mezquital: El Toboso, Outlet stream (Juan Miguel Artigas Azas)
Mezquital: El Toboso, Outlet stream (Juan Miguel Artigas Azas)
Mezquital: El Toboso, Vegetation (Juan Miguel Artigas Azas)

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New fish pictures:

New habitat pictures:
Mezquital: Laguna Seca, Inundated area (Juan Miguel Artigas Azas)
Mezquital: Laguna Seca, Laguna Seca (Juan Miguel Artigas Azas)

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New fish pictures:
Herichthys minckleyi, Female facing male (Juan Miguel Artigas Azas)

New habitat pictures:



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New fish pictures:

New habitat pictures:

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New fish pictures:
Profundulus hildebrandi, Male in the aquarium (Rubén Alonso Contreras Tapia)
Profundulus hildebrandi, Female in the aquarium (Rubén Alonso Contreras Tapia)

New habitat pictures:

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New fish pictures:
Characodon lateralis, Male in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Pair in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Male in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Characodon lateralis, Pair in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Male in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Characodon lateralis, Pair in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Male in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Paie in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Male in habitat (Juan Miguel Artigas Azas)

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Subscription price increase

On July 1, 2023, our annual subscriptions will increase from 20 to 25 USD to cover generally increasing prices for keeping the site running. Those active PayPal renewal services for 20 USD will be respected as long as they are kept active (Juan Miguel Artigas Azas).


New fish pictures:
Characodon lateralis, Pair in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Female in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Female in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Characodon lateralis, Male in habitat (Juan Miguel Artigas Azas)
Characodon lateralis, Female in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Astyanax mexicanus, Adult in habitat (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:
Gila conspersa, Adult in habitat (Juan Miguel Artigas Azas)
Gila conspersa, Adult in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Cyprinodon bifasciatus, Adult in habitat (Juan Miguel Artigas Azas)
Cyprinodon bifasciatus, Adult in habitat (Juan Miguel Artigas Azas)
Astyanax mexicanus, Adult in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Cyprinella xanthicara, Adult in habitat (Juan Miguel Artigas Azas)
Cyprinella xanthicara, Adult in habitat (Juan Miguel Artigas Azas)
Cyprinella xanthicara, Adult in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Micropterus salmoides, Adult in habitat (Juan Miguel Artigas Azas)
Micropterus salmoides, Adult in habitat (Juan Miguel Artigas Azas)
Micropterus salmoides, Adult in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Gambusia marshi, Female in Rio Mezquites (Juan Miguel Artigas Azas)
Gambusia marshi, Female in Rio Mezquites (Juan Miguel Artigas Azas)
Gambusia marshi, Females in habitat (Juan Miguel Artigas Azas)

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New fish pictures:
Fundulus grandis, Adult in habitat (Juan Miguel Artigas Azas)


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Updated species profile for:

image15-Apr-2023
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New fish pictures:
Chuco intermedium, Female guarding fry (Juan Miguel Artigas Azas)

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New fish pictures:
Cyprinodon suavium, Female in habitat (Manuel Salazar González)

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New fish pictures:


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New fish pictures:

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New fish pictures:
Atherinella alvarezi, Adult in habitat (Juan Miguel Artigas Azas)

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New fish pictures:

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New fish pictures:
Thorichthys helleri, Pair spawning (Juan Miguel Artigas Azas)

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New fish pictures:
Theraps irregularis, Female with fry (Juan Miguel Artigas Azas)
Theraps irregularis, Female with fry (Juan Miguel Artigas Azas)
Theraps irregularis, Female with fry (Juan Miguel Artigas Azas)

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New fish pictures:

New habitat pictures:

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New fish pictures:
Megupsilon aporus, Male in the aquarium (Manuel Salazar González)

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New fish pictures:
Cyprinodon ceciliae, Holotype (Manuel Salazar González)
Cyprinodon inmemoriam, Holotype (Manuel Salazar González)
Cyprinodon ceciliae, Preserved specimen (Manuel Salazar González)

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New fish pictures:
Etheostoma pottsi, Juvenile at Balneario La Concha (Jaime Emmanuelle Rodríguez Pimentel)
Etheostoma pottsi, Juvenile at Balneario La Concha (Jaime Emmanuelle Rodríguez Pimentel)

image21-Feb-2023
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New fish pictures:

image20-Feb-2023
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New fish pictures:
Gila conspersa, Juvenile (Manuel Salazar González)
Gila conspersa, Adult in habitat (Manuel Salazar González)
Cyprinodon nazas, Male in habitat (Manuel Salazar González)
Cyprinodon nazas, Male in habitat (Juan Miguel Artigas Azas)
Gila conspersa, Young adult in habitat (Manuel Salazar González)

New habitat pictures:
Nazas: Balneario La Concha, La Concha (Manuel Salazar González)

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New fish pictures:
Etheostoma pottsi, Juvenile at Balneario La Concha (Jaime Emmanuelle Rodríguez Pimentel)

image11-Feb-2023
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Published species profiles:


image09-Jan-2023
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New fish pictures:

New habitat pictures:
Ameca: Oconahua dam, Oconahua dam (Juan Miguel Artigas Azas)
Ameca: Oconahua dam, Oconahua dam (Juan Miguel Artigas Azas)

image04-Jan-2023
Published locality profile: