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Killifish belong to the family of egg-laying Cyprinodontiform fish (ray finned fish). They include the families like Aplocheilidae, Cyprinodontidae, Fundulidae, Nothobranchiidae, Profundulidae, Rivulidae and Valenciidae. There are about 12700 different species of killifish. The biggest family in the family of killifish is Rivulidae containing 320 species. The killifish eggs can survive in partial dehydration too.
Killifish Fast Facts
Some of the interesting facts about the killifish are the following:
Killifish Habitat and Behavior: These killifish are found in both brackish and fresh water. They can be found in South Africa, Argentina, Southern Europe, Australia, Antartica or Northern Europe. They are found in streams, ponds, river and lakes.
Killifish Diet :
Killifish feed on aquatic arthropod, which includes mosquito larvae, crustaceans and worms.
Killifish Reproduction :
The killifish has one of the most amazing life cycles among all the animals. Many of them which live in temporary pools and streams deposit their eggs in the mud. The water gets dried up and the eggs remain dormant deep below the ground. Then in the next season when the rain pours, a new generation appears. This is the characteristics of most of the killifish. But some of them deposit their eggs on plants and it hatches in a week or so.
Killifish as pets :
Killifish are beautifully colored fish and are easy to be kept in aquarium. The one of its species striped panchax is commonly found in the pet stores. Another one is very popular and that is Flagfish. This fish is native to South Florida. They are also commonly found in pet stores. They are also an algae controller as they control growth of algae in the aquarium.
Killifish Varieties :
Gardneri killifish :
The Gardneri killifish (Fundulopanchax gardneri), are the desert fish and are the native of Zambia. They can live their entire life even in a puddle made from elephant’s foot print.
Blue Panchax Killifish :
The Blue Panchax Killifish (Aplocheilus panchax), have slender and elongated body. They have a flattened head and upturned mouth with no barbels. They are found in Bangladesh, Myanmar, Malaysia, Nepal, Cambodia,etc.
Clown Killifish :
Clown Killifish (Pseudepiplatys annulatus), can be kept in clean and soft water. They feed on flakes and can be kept in small aquarium. They grow up to a size of 3.75 cm.
Banded Killifish :
Banded killifish (Fundulus diaphanous, are fresh water killifish and are native of North America. They grow up to a size of (10-13) cm.
Least Killifish :
The Dwarf Livebearer or Least Killifish (Heterandria formosa), is one of the smallest fish in the world. They are found in United States and grow up to a size of 1.2 inches.
Mangrove Killifish :
The mangrove killifish or mangrove rivulus (Rivulus marmoratus), is a species of Aplocheilidae fish family. It is found in North, Central and South America. It is also found from Florida to Brazil. It grows up to a size of 75mm long.
Golden Wonder Killifish :
The Golden Wonder Killifish (Aplocheilus lineatus), is a very famous variety of striped panchax. They are found throughout India and Sri Lanka. They are about 4 inches in size.
Bluefin Killifish :
Bluefin Killifish (Lucania goodie), is a handsome species. It is found in Florida. It grows up to a size of (0.6 to1.7) inches.