A jewel fish (Hemichromis bimaculatus) that is reintroduced into a familiar aquarium compartment where it had remained before during two hours, is dominant over a conspecific of similar size that had ...

David Ceilley and his son Connor weren't surprised last week when they pulled two clear-plastic fish traps from Owl Creek in East Lee County. Total catch: 21 African jewelfish (also known as jewel ...

In bony fish the swim bladder primarily serves for buoyancy. Moreover, in many species it also possesses acoustic functions: it plays a role in sound production and improves hearing in numerous ways.

Hurricanes mean chaos, but for one fish keeper it’s also the perfect time to experiment. This video captures pond prep, supply runs, and the suspense of checking an umbrella fish trap. Teen driver in ...

"Sound vibrations are transmitted to the inner ear via anterior extensions of the swim bladder or via bony ossicles", the biologist Tanja Schulz-Mirbach explains how swim bladders may serve for ...