My Tropical Fish World

The color and species of a fish is normally the best and most reliable way to tell what sex a fish is. Sometimes its color can assist in determining what species it is as well. This is because a lot of species are very similar in shape. A fish’s actual color is made up from [...]

The fins and tail of fish provide a method of propulsion and stability they are also used for defence in some fish ( lionfish ). In some cases as a spawning aid, during pre-spawning and courtship displays, egg and fry care aids. Fins and the tail are cartilage or bone webbed with tissue that can [...]

Fish Anatomy – Fish Mouth Position The position of the mouth indicates what region of the water the fish will normally get its food from. There are basically three mouth positions. The superior mouth is upturned for feeding on the surface. The design of the mouth allows the fish to gather floating objects. The next [...]

Fish have evolved over time to suite the environment that they live in, both in their structure and their behaviour. This evolution has made them vulnerable to changes in the environment that they live in. An understanding of how fish work and why fish look different is useful for any aquarium keeper. The body shape [...]