Vince_Adam Photography
IMG_0986-S(W) Tiny Male Chili Rasbora-Boraras brigittae (above) & Boraras urophthalmoides (bottom)
Instagram: www.instagram.com/soloherper2020/
Distribution:Endemic to southwestern Borneo (Kalimantan)
Synonyms: Rasbora brigittae
Note (Source: SeriouslyFish)
The congener B. urophthalmoides (fish below@orange line) is often traded as B. brigittae, presumably in order to obtain a more favourable price. Though these are similar in that they’re the only two members of the genus to possess a dark lateral body stripe B. brigittae (fish on the top) is easily identifiable by its larger adult size, lack of distinct dark blotch at the caudal peduncle, comparatively short, often broken lateral stripe and overall brighter, more uniformly red patterning. It’s sometimes seen on sale with the alternative vernacular names ‘chili rasbora’, Mosquito rasbora, or ‘dwarf rasbora’.
B. merah is also similar-looking but it lacks colour in much of the body with the red pigmentation tending to be concentrated around the dark body markings which do not usually form an unbroken stripe. Striped male individuals do exist, however, and this has led to speculation that B. brigittae and B. merah are the same species (Körner, 2010). The same author also reported that in an ‘eastern’ population (from the area around Banjarmasin?) both sexes develop a striped pattern before maturity, while in the ‘central’ population (Palangkaraya, where fish are collected for the aquarium trade) only males develop the striped colour pattern, and only when sexually mature. Kottelat (2013) argued that the different ontogenies in colour pattern, and presumed geographical distribution of these two populations, supports the existence of two species, whilst also noting that Palankaraya is not close to the type locality of B. merah; the Sungei Jelai Bila river basin in Kalimantan Tengah, much further west.
Boraras was erected in 1993 in order to separate a small group of species from the larger Rasbora assemblage on the basis of differences in morphology and reproductive strategy.
In older literature they are therefore referred to as members of Rasbora and following Liao et al. (2010) the genus is a member of the rasborin sub-group within the subfamily Danioninae (the other sub-group contains the danionins).
More information please refer to www.seriouslyfish.com/species/boraras-brigittae/
IMG_0986-S(W) Tiny Male Chili Rasbora-Boraras brigittae (above) & Boraras urophthalmoides (bottom)
Instagram: www.instagram.com/soloherper2020/
Distribution:Endemic to southwestern Borneo (Kalimantan)
Synonyms: Rasbora brigittae
Note (Source: SeriouslyFish)
The congener B. urophthalmoides (fish below@orange line) is often traded as B. brigittae, presumably in order to obtain a more favourable price. Though these are similar in that they’re the only two members of the genus to possess a dark lateral body stripe B. brigittae (fish on the top) is easily identifiable by its larger adult size, lack of distinct dark blotch at the caudal peduncle, comparatively short, often broken lateral stripe and overall brighter, more uniformly red patterning. It’s sometimes seen on sale with the alternative vernacular names ‘chili rasbora’, Mosquito rasbora, or ‘dwarf rasbora’.
B. merah is also similar-looking but it lacks colour in much of the body with the red pigmentation tending to be concentrated around the dark body markings which do not usually form an unbroken stripe. Striped male individuals do exist, however, and this has led to speculation that B. brigittae and B. merah are the same species (Körner, 2010). The same author also reported that in an ‘eastern’ population (from the area around Banjarmasin?) both sexes develop a striped pattern before maturity, while in the ‘central’ population (Palangkaraya, where fish are collected for the aquarium trade) only males develop the striped colour pattern, and only when sexually mature. Kottelat (2013) argued that the different ontogenies in colour pattern, and presumed geographical distribution of these two populations, supports the existence of two species, whilst also noting that Palankaraya is not close to the type locality of B. merah; the Sungei Jelai Bila river basin in Kalimantan Tengah, much further west.
Boraras was erected in 1993 in order to separate a small group of species from the larger Rasbora assemblage on the basis of differences in morphology and reproductive strategy.
In older literature they are therefore referred to as members of Rasbora and following Liao et al. (2010) the genus is a member of the rasborin sub-group within the subfamily Danioninae (the other sub-group contains the danionins).
More information please refer to www.seriouslyfish.com/species/boraras-brigittae/