Live Rock Hitchhikers: Tunicates (Sea Squirts)

Among the more fascinating creatures that commonly make their way into marine aquariums as stowaways on good-quality live rock are tunicates, or sea squirts. In terms of visual interest, these animals can be quite dazzling, with some exhibiting spectacular coloration or resembling small, delicate, translucent pitchers or urns. What are they? Tunicates are filter-feeding marine … [Read More]

Don’t Get Burned by Flame Scallops!

Mention beautiful bivalves for the marine aquarium, and the various tridacnid clams (the so-called giant clams) will probably come to mind. Likely, the flame scallops of the genus Ctenoides will too. However, while the tridacnids have a fairly decent survival record in captivity if given proper care and a suitable environment, the flame scallops usually … [Read More]

How to Handle a Hunger-Striking Saltwater Fish

Having a fish that refuses to eat anything offered—or having a specimen that had been eating suddenly lose all interest in food—is a problem virtually every marine aquarium hobbyist can expect to encounter at one time or another. While such “hunger strikes” can be extremely frustrating and disconcerting, they can usually be overcome with patience, … [Read More]