Previously, it was assumed that the earliest record of this genus was the fossil species Puntius bussyi from the Eocene of Sumatra, but a 2020 study reclassified this species into the new genus Pauciuncus, possibly in the subfamily Smiliogastrinae.[5]
Puntius of West Bengal, IndiaCherry barb (Puntius titteya), male below and female above.
The maximum size for an adult of this genus is 25 cm (10 in), but most species reach 7–15 cm (2.8–5.9 in) and some species do not surpass 5 cm (2 in).[1] In appearance they may resemble miniature carp and are sometimes brightly coloured or patterned.[1]
Behavior
These fishes are omnivorous; their diet includes small invertebrates and plant matter. Breeding is by egg scattering and takes place close to the bottom, near or within areas of dense plant growth. They do not show parental care and adults may eat the young.
Taxonomy
Historically, many species of Puntius have been classified in several genera, including Barbus. Despite the reclassifications, the specific epithet remains the same in these – except in cases of homonymies – as Barbus and Puntius have the same grammatical gender. The closest living relatives of the spotted barbs are the genus Cyprinion and perhaps the genus Capoeta. These and the other "typical" barbs and barbels were formerly often separated as subfamilyBarbinae, but this group is highly paraphyletic with regard to the Cyprininae and better merged there at least for the largest part (including Puntius). In particular the genus Barbonymus, containing the tinfoil barb and its relatives – for some time included in Puntius – appears to be a kind of carp that has evolved convergently with barbs.
Species
These are the currently recognized species in this genus:
