
Red River pupfish
Cyprinodon rubrofluviatilis
Cyprinodontidae, Cyprinodontinae

Cyprinodon rubrofluviatilis
Cyprinodontidae, Cyprinodontinae
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Inhabits shallow, sandy pools and runs of headwaters, creeks, and small to medium rivers. Often found in extremely shallow and hot (to 37°C) water. Consumes midge and other insect larvae. Not a seasonal killifish. Is difficult to maintain in aquarium.
Streams and ponds in North America are often cool. How to set up an aquarium without a heater, with pygmy sunfish, shiners and darters.
From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.
Why new fish should live in a tank of their own for a few weeks before they move in, what you need, and what to look for.
The most common disease in aquarium fish. How to recognize it, why it shows up, and how to get rid of it.