Guides

South American Fish

Royal Tetra (Inpaichthys kerri)

The royal tetra, or blue emperor tetra, is a small, peaceful schooling fish with a shimmering blue stripe. Here is how to care for Inpaichthys kerri.

The flagtail prochilodus is a large, peaceful Amazon fish with boldly striped fins and a big appetite for algae. Here is what it needs.

The marbled headstander swims head-down while it grazes. It is a striking fish, but it nips plants and fins. Here is how to keep Abramites hypselon…