Bitterling Fish

The Bitterling fish is a freshwater fish and belongs to the Cyprinidae family. Its scientific name is Rhodeus Amarus. The current size of the bitterling fish is 5-6 cm. Some individuals can reach a maximum height of 11 cm and a weight of 10 g. This species is one of the smallest Cyprinid in Europe. It lives on average from 2 to 3 years. The spawning period is between April and June. It lays 40 to 100 oocytes. This fish is easy to catch due to its small size.
The bitterling is a small fish whose body is high and laterally compressed. The lateral line is short or incomplete. The scales on the back have a grey-green coloring. The sides are clear with silvery reflections. During the breeding period the silver coloration changes to a pink to bright red color with a dark blue sideband. Sexual dimorphism occurs between the male and female during reproduction. A 5 to 8 mm laying tube (ovipositor) develops in the female, which allows her to lay her eggs in the gill cavity of freshwater mussels. The male has a higher body than the female and its colors become brighter during the breeding season. The bitterling fish's eyes are quite large. Its mouth is small, oblique and the upper jaw protrudes beyond the lower jaw. The anal and dorsal fins have a short base and 8 to 10 branched rays.