
Northern studfish
Fundulus catenatus
Fundulidae

Fundulus catenatus
Fundulidae
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Inhabits margins, pools and backwaters of creeks and small to medium rivers. Most commonly found in shallow sandy backwaters of clean rocky creeks. 18 cm max TL. Adult feeds on aquatic insect larvae and snails. Not a seasonal killifish. Is very 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.