Which Bitterling?
The common name has been applied to more than one species. European Bitterling, Rhodeus amarus, was formerly included with Rhodeus sericeus in many accounts. European occurrence records should not automatically be assigned to the eastern Asian species covered here.
Size and Weight
The published summary for Rhodeus sericeus gives a maximum total length of 11 cm, about 4.3 inches. A dependable maximum body weight was not verified. Historical literature needs particular care because it sometimes used the same name for European fish.
Habitat and Natural Food
Quiet freshwater habitats include ponds, marshes, lakes and slow river pools. Species summaries describe plant material and small insect larvae among its foods. Suitable living mussels are an additional reproductive requirement beyond the water habitat alone.
Fishing Context
Bitterling is primarily of natural-history and aquarium interest rather than an established sport fish. The sources checked do not establish a recreational bait or lure method for this exact species.
An Unusual Place to Begin Life
A female develops a tube-like egg-laying organ and places eggs inside a freshwater mussel. Early development takes place within the host before the young emerge. This remarkable dependence makes the mussel community part of the fish’s reproductive habitat.
All Lakes With Bitterling
Browse all lakes and reservoirs with confirmed Bitterling records in our database, listed alphabetically.
No published lakes are currently linked to this species in our confirmed records.