Killifish is not very popular in aquarium husbandry and it is seldom sold in pet shops, though this is the brightest tank fish and a very fascinating one. But it’s not only the rich coloring that makes this fish so attractive. It has rather unusual spawning habit, due to which the fish is called an annotinous one. The fish hatches, reproduces and dies in a period of about a year. In the wild the fish dwells in ephemeral waters, which dry up for a period that lasts about six months.
Badis badis (also known as the blue perch or blue badis) is the most famous Badis genus and Badidae family representative. This is a good-looking dark-blue fish that has been popular among aquarists for several dozens of years already. This calm, not demanding in terms of keeping fish, can be interesting not only for experts but for beginning aquarists as well.
Motoro stingray or ocellate river stingray (Lat. Potamotrygon motoro) is one of the most famous and popular freshwater rays. We should mention that despite the motoro stingray popularity in aquarium husbandry, there is still no quite precise classification of this family representatives.
From time to time, some new kinds are discovered, which were not described before.
The sun catfish (lat. Horabagrus brachysoma), which is also known as eclipse catfish, can often be seen in tanks nowadays, though it’s not a fish for everyone. This article has information about how large the fish can grow and who it represents danger to.