Red-gilled Nudibranch (Coryphella verrucosa)

Coryphella verrucosa is a small, active aeolid nudibranch that does best in a stable marine system with gentle water flow. They should be kept in a large/medium sized tank with clean, well cycled and filtered seawater and moderate circulation. Strong currents or turbulence can damage their delicate bodies. Avoid certain HOB filters with a grate you suspect the nudibranchs could get sucked through or damaged by. They are carnivores and will feed on hydroids and small cnidarians. If you are keeping them for research or observation, it is best to provide a consistent supply of their preferred prey (Ectopleura crocea). If hydroids are not available, they can sometimes be maintained on alternative prey like small soft bodied invertebrates, but feeding can be challenging and may not support long term culture. Coryphella verrucosa typically prefers colder temperatures and can be kept as low as,  8°C and probably colder. If a higher temperature is more likely to be stable this is acceptable. They are also prone to jumping or crawling out of shallow water, so a secure lid is recommended. If your lid has any opening they can escape through you can expect them to do so.