Rasboroides nigromarginatus explained

Rasboroides nigromarginatus is a species of freshwater cyprinid fish endemic to Sri Lanka where only known from small, shaded streams in the Atweltota region of the Kalu River basin.^[1] It can also be found in the aquarium trade.

Long considered a synonym of R. vaterifloris, R. nigromarginatus was revalidated as a species in 2013.^[1] A comprehensive taxonomic review in 2018 based on morphometry, meristics and mtDNA disputed this, returning it to being a synonym of R. vaterifloris.^[2]

Notes and References

1. Batuwita, Sudesh; de Silva, M.; Edirisinghe, U. (November 2013). "A review of the danionine genera Rasboroides and Horadandia (Pisces: Cyprinidae), with description of a new species from Sri Lanka". Ichthyological Exploration of Freshwaters. 24 (2): 121–140.
2. Sudasinghe, H., J. Herath, R. Pethiyagoda and M. Meegaskumbura. (2018). Undocumented Translocations Spawn Taxonomic Inflation in Sri Lankan Fire Rasboras (Actinopterygii, Cyprinidae). PeerJ. 6:e6084.