Comparisons of Exotic fish
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Tetra fish are one of the most popular fish to keep in an aquarium, but they are a little difficult to categorize. While the vast majority belong to the family Characidae, there are some tetra varieties which are considered part of other families. Generally speaking, they are small fish which have a laterally...
There are many species of Betta fish, although too often they're just simply referred to as "Betta", which makes them difficult to classify and clarify. They can be identified by taking a look at their morphology, especially regarding their fins and tails.
The most popular kind of Betta fish - especially...