Freshwater Fish Vs Saltwater Fish Aquarium. Just like saltwater fish there are many colorful and attractive freshwater fish including cardinal tetras fancy guppies killifish bettas and cichlids just to name a few. The number of breeds you can have in your aquarium is literally limitless but some of the most popular breeds include.
Saltwater fish are rarer than freshwater ones and often more temperamental but also can have more personality and characteristics than their freshwater counterparts. A saltwater tank can house tropical marine fish species corals sponges anemones and other organisms you typically find living in the ocean. In general keeping saltwater fish is more expensive and more difficult than keeping freshwater fish.
As saltwater holds about 20 less oxygen than a freshwater fish tank all you need to do is stock it with 20 less fish.
As saltwater holds about 20 less oxygen than a freshwater fish tank all you need to do is stock it with 20 less fish. Freshwater only accounts for less than 3 percent of all the water on earth but ironically freshwater fish make up almost half of all fish species. Generally speaking yes saltwater fish tend to be larger and have a need for larger aquarium sizes. Meanwhile saltwater fish are caught directly from the ocean which means their ability to acclimatize to your fish aquarium is quite unpredictable.
