Cardinal tetras are native to the Orinoco and Negro Rivers of South America. These colorful fish, with their blaze of iridescent blue underlined by bright red, are popular aquarium fish. In addition to captive breeding programs, cardinal tetras are also sourced from sustainable fisheries in Barcelos, Brazil, a system which allows local people to make a living while acting as environmental stewards (instead of turning to environmentally destructive practices for survival).
https://en.wikipedia.org/wiki/Cardinal_tetra
http://www.petsource.org/aquatic-by-species/aquatic-fresh-water/3751-cardinal-tetra.html
The fish that could drown (and other amazing tales)
Fish are masters of aquatic living, though some manage to do pretty well on land, too! Of living species, the mudskipper is probably the best adapted to life out of water - in fact, a mudskipper will drown if it can’t periodically come to the surface! This unusual fish uses its powerful, almost leg-like fins to walk on land and can even use them to “skip” up to 2 feet in the air! Similar to many amphibians, the mudskipper is able to breathe through its skin and the linings of its mouth and throat. It also seals water in its gill chambers when it leaves the water for extended stays on the land, much like a scuba diver brings air with them!-
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