Info Ikan
Synonyms
Rasbora urophthalma brigittae Vogt, 1978
Etymology
Boraras: anagram of the generic name Rasbora, in reference to the reversed ratio of abdominal and caudal vertebrae in this genus.
brigittae: named for the author’s wife.
Classification
Order: Cypriniformes Family: Cyprinidae
Distribution
Appears to be endemic to southwestern Borneo though occurence records are scant. The type locality is ‘Bandjarmasin’, a port town in the Indonesian province of Kalimantan Selatan (South Kalimantan), and following Kottelat (1991) it’s range extends westwards as far as the Jelai Bila river basin, near the town of Sukamara, where it’s said to occur sympatrically with the congener B. merah (but see ‘Notes’).
Habitat
Inhabits black water streams and pools associated with ancient forest peat swamps. The water is stained brown due to the release of tannins and other chemicals released by decomposing organic matter and thesubstrate scattered with fallen leaves, twigs and branches.
Such environments characteristically contain very soft (negligible hardness), acidic (pH as low as 4.0) water and are often dimly-lit due to dense marginal vegetation and the forest canopy above. Across much of Southeast Asia these precious biotopes are under threat from rubber or palm oil plantations, building developments and other human activities.
Maximum Standard Length
15 – 20 mm.
Aquarium SizeTOP ↑
Though small it still needs space to swim and dominant males will form temporary territories when spawningso a group is best kept in an aquarium with base dimensions of at least 45 ∗ 30 cm.
Maintenance
Best maintained in a densely-planted aquarium and is an excellent choice for the carefully-aquascaped set-up. The addition of some floating plants and driftwood roots or branches to diffuse the light entering the tankalso seems to be appreciated and adds a more natural feel.
Filtration does not need to be particularly strong as it mostly hails from sluggish waters and may struggle if there is a fast current.
To see it at its best a biotope-style set-up can also make an interesting project. A soft, sandy substrate is probably the best choice to which can be added roots and branches, placed in such a way that plenty of shady spots are formed.
The addition of dried leaf litter further emphasises the natural feel and encourage growth of microbe colonies as decomposition occurs. These tiny creatures can provide a valuable secondary food source for fry whilst the tannins and other chemicals released by the decaying leaves are thought to be beneficial for blackwaterfish species. Leaves can be left in the tank to break down fully or removed and replaced every few weeks.
Fairly dim lighting should be used to simulate the conditions the fish would encounter in nature. You could add aquatic plants that can survive under such conditions such as Microsorum pteropus, Taxiphyllum barbierior Cryptocoryne spp.
Do not introduce any Boraras sp. to a biologically-immature aquarium as they can be susceptible to swings in water chemistry.
Water Conditions
Temperature: 20 – 28 °C
pH: 4.0 – 7.0
Hardness: 18 – 179 ppm
Diet
As with other Boraras species it is likely to be a micropredator feeding on small insects, worms, crustaceans and other zooplankton in nature. In the aquarium it will accept dried foods of a suitable size but should not be fed these exclusively.
Daily meals of small live and frozen fare such as Daphnia, Artemia along with good quality flakes and granules will result in the best colouration and encourage the fish to come into breeding condition.
Behaviour and CompatibilityTOP ↑
This species is very peaceful but does not make an ideal community fish due to its small size and rather timid nature. It will do best when maintained alone or with other diminutive species such as Microdevario,Sundadanio, Danionella, Eirmotus, Trigonostigma, pygmy Corydoras and small Loricariids such as Otocinclus.
It also makes an ideal companion for shy anabantoids such as Sphaerichthys, Parosphromenus or the more diminutive Betta species, and in a planted set-up can be housed alongside freshwater shrimp of the generaCaridina and Neocaridina.
It’s a schooling species by nature and really should be kept in a group of at least 8-10 specimens. Maintaining it in decent numbers will not only make the fish less nervous but will result in a more effective, natural-looking display. Males will also display their best colours and some interesting behaviour as they compete with one other for female attention.
Source : http://www.seriouslyfish.com/species/boraras-brigittae/
SynonymsTOP ↑
Rasbora urophthalma brigittae Vogt, 1978
Etymology
Boraras: anagram of the generic name Rasbora, in reference to the reversed ratio of abdominal and caudal vertebrae in this genus.
brigittae: named for the author’s wife.
Classification
Order: Cypriniformes Family: Cyprinidae
Distribution
Appears to be endemic to southwestern Borneo though occurence records are scant. The type locality is ‘Bandjarmasin’, a port town in the Indonesian province of Kalimantan Selatan (South Kalimantan), and following Kottelat (1991) it’s range extends westwards as far as the Jelai Bila river basin, near the town of Sukamara, where it’s said to occur sympatrically with the congener B. merah (but see ‘Notes’).
Habitat
Inhabits black water streams and pools associated with ancient forest peat swamps. The water is stained brown due to the release of tannins and other chemicals released by decomposing organic matter and thesubstrate scattered with fallen leaves, twigs and branches.
Such environments characteristically contain very soft (negligible hardness), acidic (pH as low as 4.0) water and are often dimly-lit due to dense marginal vegetation and the forest canopy above. Across much of Southeast Asia these precious biotopes are under threat from rubber or palm oil plantations, building developments and other human activities.
Maximum Standard Length
15 – 20 mm.
Aquarium SizeTOP ↑
Though small it still needs space to swim and dominant males will form temporary territories when spawningso a group is best kept in an aquarium with base dimensions of at least 45 ∗ 30 cm.
Maintenance
Best maintained in a densely-planted aquarium and is an excellent choice for the carefully-aquascaped set-up. The addition of some floating plants and driftwood roots or branches to diffuse the light entering the tankalso seems to be appreciated and adds a more natural feel.
Filtration does not need to be particularly strong as it mostly hails from sluggish waters and may struggle if there is a fast current.
To see it at its best a biotope-style set-up can also make an interesting project. A soft, sandy substrate is probably the best choice to which can be added roots and branches, placed in such a way that plenty of shady spots are formed.
The addition of dried leaf litter further emphasises the natural feel and encourage growth of microbe colonies as decomposition occurs. These tiny creatures can provide a valuable secondary food source for fry whilst the tannins and other chemicals released by the decaying leaves are thought to be beneficial for blackwaterfish species. Leaves can be left in the tank to break down fully or removed and replaced every few weeks.
Fairly dim lighting should be used to simulate the conditions the fish would encounter in nature. You could add aquatic plants that can survive under such conditions such as Microsorum pteropus, Taxiphyllum barbierior Cryptocoryne spp.
Do not introduce any Boraras sp. to a biologically-immature aquarium as they can be susceptible to swings in water chemistry.
Water Conditions
Temperature: 20 – 28 °C
pH: 4.0 – 7.0
Hardness: 18 – 179 ppm
Diet
As with other Boraras species it is likely to be a micropredator feeding on small insects, worms, crustaceans and other zooplankton in nature. In the aquarium it will accept dried foods of a suitable size but should not be fed these exclusively.
Daily meals of small live and frozen fare such as Daphnia, Artemia along with good quality flakes and granules will result in the best colouration and encourage the fish to come into breeding condition.
Behaviour and CompatibilityTOP ↑
This species is very peaceful but does not make an ideal community fish due to its small size and rather timid nature. It will do best when maintained alone or with other diminutive species such as Microdevario,Sundadanio, Danionella, Eirmotus, Trigonostigma, pygmy Corydoras and small Loricariids such as Otocinclus.
It also makes an ideal companion for shy anabantoids such as Sphaerichthys, Parosphromenus or the more diminutive Betta species, and in a planted set-up can be housed alongside freshwater shrimp of the generaCaridina and Neocaridina.
It’s a schooling species by nature and really should be kept in a group of at least 8-10 specimens. Maintaining it in decent numbers will not only make the fish less nervous but will result in a more effective, natural-looking display. Males will also display their best colours and some interesting behaviour as they compete with one other for female attention.
