The Special Needs of Saltwater Fish
Similar to freshwater fish, saltwater fish have special needs based on the ecosystem from where they originate. While there are many species of saltwater fish that will fare well in a community tank, some fish like seahorses should be kept in a single species aquarium. The coral reef system is the most demanding as the corals have specific lighting requirements, water flow requirements, and additional water chemistry needs. Larger tanks tend to handle water fluctuations better than smaller tanks.
The following fish are recommended for a saltwater tank that is 30-gallons or larger. Most of these fish are appropriate for a community, fish-only tank. Those that are also suitable for a coral reef system are noted with an asterisk (*). Others may be added to a reef system, but be aware that these fish may nip at the corals.
These selections are hardy, inexpensive, and can acclimate easily to the home aquarium.