How to Select Saltwater Fish

Saltwater fish can be very entertaining and make great pets, especially where pets that are more mobile may not be an option.  Not all saltwater fish are ideal for beginners, however, and many of them are not compatible with each other.  It is important to choose fish that will get along, be hardy and easy to take care of.

• Choose fish that are known to be sturdy and not as prone to illness or disease such as Damselfish, dottybacks, pseudochromis, gobies, Clownfish and Hawk fish.


• Avoid fish that are large or carnivorous.  These are best selected after you have some basic saltwater fish experience.


• Avoid angelfish, butterfly fish, seahorses, pipefish and filefish.  These are more difficult to care for and may require special accommodations.


• Choose fish who are different species and do not resemble one another.  This helps to improve compatibility between tank mates.


• Do not place aggressive fish with peaceful fish or soon the aggressor may be living alone. 


• Select fish whose size is appropriate to your tank.  Overcrowding can cause serious problems in a saltwater tank, such as hygiene issues, aggression and killing.


• Choose active fish that appear healthy and alert.  Sluggish or lethargic fish may have health issues.


• Determine body condition before purchasing.  Fish whose heads are disproportionately large to their bodies may be underfed which can indicate a health problem.


• Opt for captive-bred fish over wild-caught.  These tend to be healthier and better suited to life in a tank.  Survival rates for wild-caught saltwater fish are much lower than those bred in captivity.