Adolfo’s catfish (Corydoras adolfoi) is a small-sized, brightly colored, and peaceful aquarium catfish. This fish has quite recently appeared in tanks of aquarium fish fanciers, and it is less popular than other Corydoras species.
Beckford’s pencilfish
Beckford’s pencilfish (Latin – Nannostomus beckfordi, in English it’s golden pencilfish) is a very small an peaceful tank fish. The article has information on how to keep, feed the fish and what are the best tank mates.
Zebra oto
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
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.
