What’s causing them? It’s an unwanted fish, the Florida Fish and Wildlife Conservation Commission says. “These holes have become a common sight for our freshwater fisheries biologists,” the FWC’s Fish ...

18 Facebook post. “Dug by the exotic and invasive armored sailfin catfish (aka ‘plecos’ or ‘Plecostomus’), these burrows serve as nesting sites where the catfish protect their eggs and ...

Shrimp can make fascinating aquarium subjects and are extremely industrious residents — in fact, they’re far better at algae control than plecos. You don’t mention which of the many species available ...