Skip to content

RiversEl Niño seen disrupting fish migration patterns SpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It Again OceanEye to eye with Britain's hidden sharks at SharkAdemy - Oceanographic RiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at all OceanShedd Aquarium Sends Shark Eggs to Bolster Wild Populations SpeciesA rare fish has been found in Lake Ontario, North America, whose entire body is golden. It is a nati..OceanThe Great Sea Reef Is Fiji’s Wildest Dive, and a New Frontier for Conservation OceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray Area SpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow Reductions FisheriesAdams River Salmon Run in Thompson-Nicola RiversEl Niño seen disrupting fish migration patterns SpeciesScientists Discover Mysterious New Fish in the Red Sea – and Have Never Seen It Again OceanEye to eye with Britain's hidden sharks at SharkAdemy - Oceanographic RiversIn October, biologists surveying a New York harbor for invasive fish pulled up a bright yellow one. It wasn't an invasive species at all OceanShedd Aquarium Sends Shark Eggs to Bolster Wild Populations SpeciesA rare fish has been found in Lake Ontario, North America, whose entire body is golden. It is a nati..OceanThe Great Sea Reef Is Fiji’s Wildest Dive, and a New Frontier for Conservation OceanEckerd College professor contributes to designating Biscayne Bay an Important Shark and Ray Area SpeciesRio Verde Grande Survey Identifies Fifty-Three Fish Species Facing Flow Reductions FisheriesAdams River Salmon Run in Thompson-Nicola

EveryFish

🇵🇾 Fish of Paraguay

9 fish from Paraguay, best known first.

Reef or sea River or lake Fishing harbour Fish market Aquarium or research City

🇧🇷 Brazil and 2 moreBlack tetra Small freshwater characin with dark vertical barsOther · Rivers and lakes 🇧🇷 Brazil and 4 moreSerpae tetra Small red freshwater fish from South AmericaOther · Rivers and lakes · 1882

🇵🇾 Paraguay and 3 moreBuenos Aires tetra Hardy silver freshwater fish with red fins and a black tail mark.Other · Rivers and lakes · 1907

🇧🇷 Brazil and 3 moreFlag cichlid A South American cichlid from river basins in Brazil and Bolivia.Cichlid · Rivers and lakes

🇧🇷 Brazil and 3 moreBlue leopard corydoras Small peaceful armoured catfish from South AmericaCatfish · Rivers and lakes

🇻🇪 Venezuela and 3 moreBlack ghost knifefish Nocturnal electric fish from South American riversOther · Rivers and lakes · 1766

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

Blue leopard corydoras: NiKo at German Wikipedia, Public domain, source
Buenos Aires tetra: Mattia Nocciola, CC BY-SA 4.0, source
Black tetra: emptyvi, CC BY-SA 3.0, source
Flag cichlid: Citron, CC BY-SA 3.0, source
Black ghost knifefish: Photo by and (c)2005 Derek Ramsey ( Ram-Man ), CC BY-SA 2.5, source

The weekly digest

Every Monday: the fish of the day, new pages on EveryFish, and the conferences and anniversaries of the week ahead.