Zebra oto or tiger oto (Latin – Otocinclus cocama) is one of the smallest catfishes from Loricariidae family. It will tirelessly help you fight with algae in a tank. However, it is more seldom encountered in aquariums than Otocinclus affinis.
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.
Flame tetra (Hyphessobrycon flammeus also known as the red tetra or Rio tetra) is a bright colored aquarium fish of Characidae family. In pet shops the fish species quite often have pale coloring due to the high level of stress they are exposed to there.
However, when you bring them home and create favorable conditions, their coloring becomes bright again.
Rainbowfishes (Melanotaeniidae) is a rather popular aquarium fish kind. It got the name due to the coloring which contains all rainbow dyes in the most unusual and unexpected combinations.
Nowadays there are 72 rainbowfish kinds known. All of them inhabit in Australia and neighboring islands.