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OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. This group are known as livebearers because unusually for fish the females give birth to free swimming live fry (ovoviviparous) rather than laying eggs.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. Anabantids are a diverse group of fish that have adapted to living in oxygen-poor waters. 

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. Rainbowfish are some of the more colourful freshwater fish available, with males exhibiting distinctive patterns once adults.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. This group of fish are not really sharks at all as they lack cartilage and teeth and are more closely related to the humble minnow. In a freshwater tropical aquarium, they can make striking additions.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. The dwarf cichlids are popular fish for those who are interested in the behavioural traits of cichlids but do not want the aggression of the Lake Malawi and Tanganyika species.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. This is a group of moderately aggressive to aggressive fish which originate from Central and South America and are members of the cichlid family.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. Malawi cichlids are very colourful, diverse and aggressive fish. It is thought they are some of the most colourful tropical fish that can be kept. In the wild they are found in Lake Malawi, Africa.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. If you would like to keep a more unusual species in your freshwater tank, then the following three species could be an option. They are the freshwater river stingrays, knifefish and elephant noses.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. This group of fish includes the piranhas, snakeheads, wolf fish and other predatory fish. They originate from many parts of the world including Africa and the Americas.

OATA produce a good range of free care sheets for coldwater, tropical freshwater and marine fish as well as for invertebrates, aquatic reptiles and plants. Tropical freshwater algae eaters are often added to aquariums in order to help remove the build up of algae which grows in the tank.