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Cyprinidae, Abbottina rivularis fish

The picture below shows the Abbottina rivularis, commonly known as? Tiger fish, sand hammer, flower stick

Long body, slightly flattened laterally. The head is short, the snout is short, and the front end is round and blunt. The eyes are small, positioned upward on the side, and the space between the eyes is wide and flat. The dorsal fin has no hard spines, and the pectoral fins are round and blunt, both of which are short. Forked caudal fin. The back of the head is slightly darker, and there is an inconspicuous vertical stripe on the side of the body, with 9-11 black spots on it, and 8-11 black spots on the back. The dorsal and caudal fins have markings consisting of small black dots.

Small fish live at the bottom of still or flowing water and feed on invertebrates. The 1-year-old fish is sexually mature and breeds in April to May. It digs a hole in the sandy bottom as a nest and lays eggs in it. The male fish has the habit of building and protecting the nest.