The Harlequin Rasbora is a small freshwater fish with a distinctive black triangular patch on its orange-red body. This ...

Discovered in Australia, the fossils represent a new species that lived during the Miocene epoch and highlight how iron-rich ...

This placed them alongside other species of rasboras, small freshwater fish in the same family as carps and minnows. In 1999, after realizing their breeding behavior was closer to another type of ...

Mussel shells provide living space for insects and plants, and empty shells serve as nesting sites for small fish like darters. Unfortunately, for all their allure, freshwater mussels are the most ...

They also lack the amino-acid balance of an ideal replacement for fish meal, he adds. In lab-scale experiments, the team has shown that small freshwater fish could be maintained for several weeks ...

The "worthless fish" in question is the Delta Smelt, a small and endangered freshwater fish that's protected under California law — and, though it's a crowded field, just might represent one of ...