Unless otherwise adapted, a fish is isolated to a single body of water. Attempting to move between bodies of water can bring huge benefits, especially if resources such as food or potential mates are scarce. The climbing perch from Africa is aptly named as it is able to spend short periods of time out of water in search of a new aquatic home. They can do this by the use of stiffened pectoral fins to help them “walk” over dry land. But they’re not the only fish with the ability to move to new waters; lungfish (check out part 1), mudskippers and mummichogs (a type of killifish) also exploit this skill, albeit with varying degrees of finesse!
Image credit: BBC
Tagged in: Aquatic Adaptations