The first type of saltwater aquarium is the fish only aquarium. This is probably the easiest to care for of the five types, simply because you are only dealing with one type of species.

Amongst the saltwater fish there are both tropical and coldwater types. They can’t be kept together for obvious reasons. The water temperatures vary greatly.

Tropical fish are usually brighter in color, and therefore more appealing to aquarium lovers than the fish available in the cold water variety.
Most people are somewhat familiar with a few tropical fish such as the Clownfish or the Angel fish.

However, few people have heard of such cold water varieties as, the Shanny or the Tompot Blenny.

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Saltwater Aquariums