Seriously Fish
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Genus

Botia

Species
7
Photographed
7 of 7
Difficulty rated
7 of 7
Adult female of B. lohachata?

Botia almorhaeYo-Yo Loach

Gray, 1831

Max length
160mm SL6in SL
Tank
120 × 45cm48 × 18in
Temp
19–27.5°C66–82°F
pH
6.0–7.5

The physical appearance of B. almorhae sensu stricto is something of a mystery. No pictures of live specimens appear in any scientific publications we've read and we've been unable to find a certified image of one anywhere meaning it's possibly never been seen in the aquarium trade. Instead the most commonly available members of the nominal species grouping seem to be B. lohachata, B. sp. 'Kosi' and B. sp. 'Teesta' (see individual notes below), plus the assorted hybrids that have appeared since the turn of the century (Grant, 2007).

Easy
Large adult specimen of Botia dario.

Botia darioBengal Loach

Hamilton, 1822

Max length
130mm SL5in SL
Tank
120 × 45cm48 × 18in
Temp
23–26°C73–79°F
pH
6.0–7.5

Following Grant (2007) this species is included in the B. dario complex of closely-related species within the genus alongside B. striata. They're characterised by body patterning consisting of a base yellow to golden colour with 7-9 blue, green, grey or black body bars usually with thinner, lighter bars between. In some individuals the...

Moderate
Adult male of B. histrionica - Ataran form?

Botia histrionica

Blyth, 1860

Max length
130mm SL5in SL
Tank
120 × 45cm48 × 18in
Temp
22–28°C72–82°F
pH
6.0–7.5

Adult patterning of the different geographical forms can vary considerably though young specimens all possess 5 solid dark bars on each flank and are often confused with those species exhibiting a similar juvenile pattern, particularly B. kubotai. However the horizontal dark bars on the flanks in B. kubotai typically split at quite a young age and/or develop horizontally-orientated 'peaks' whereas those in B. histrionica remain solid for longer and the central bar usually has a pale spot at the top so forms a 'y' shape.

Easy
Individual with typical subadult patterning.

Botia kubotaiPolka-Dot Loach

Kottelat, 2004

Max length
150mm SL6in SL
Tank
120 × 45cm48 × 18in
Temp
22–28°C72–82°F
pH
6.0–7.5

Appears to be endemic to headwaters of the Salween River basin around the border between Myanmar and Thailand. The type specimens were collected from the Megathat Chaung (Megathat stream) in the upper Ataran (known as the Kasat in Thai) River basin, Kayin/Karen State, Myanmar and another population was later discovered in the Hanthayaw River (Suriya in Thai), Tak Province, Thailand.

Easy
Adult male of B. sp. 'Upper Brahmaputra'.

Botia rostrata

Günther, 1868

Max length
120mm SL5in SL
Tank
120 × 45cm48 × 18in
Temp
19–27°C66–81°F
pH
6.0–7.5

Within the nominal species grouping suggested by Grant (2007) almost all B. rostrata sold in the hobby are B. sp. 'upper Brahmaputra' with B. rostrata sensu stricto rarely, if ever, available. Trade names include 'Gangetic loach', 'twin-banded loach' and 'ladder loach'. The defining characters of the group are "Pattern consisiting of 8-10 black to dark brown body bars that exhibit pale and numerous spots in juveniles, and in adults the bars can anast...

Easy
This species has distinctive colouration - also note the red mouthparts.

Botia striataZebra Loach

Narayan Rao, 1920

Max length
90mm SL3.5in SL
Tank
120 × 30cm48 × 12in
Temp
21–26°C70–79°F
pH
6.0–7.5

In a survey of fish diversity in the Bhadra River (which joins the Tunga to form the Tungabhadra) it was recorded alongside numerous other species including Puntius chola, Balitora mysorensis, and Mystus armatus. Dry season water paramaters were temperature 69.8°F/21°C, pH 7.0, hardness ~ 2.5°. The substrate was composed of bedrock, boulders, cobbles, gravel, sand and leaf litter in descending order of abundance with a maximum depth of around...

Easy
This is a subadult specimen in which the vertical body bars are still relatively unbroken.

Botia udomritthirujiEmperor Botia

Ng, 2007

Max length
150mm SL6in SL
Tank
120 × 45cm48 × 18in
Temp
23–28°C73–82°F
pH
6.0–7.5

Known only from the Tanintharyi River drainage in Tanintharyi (previously Tenasserim) Division, southern Myanmar. Tanintharyi lies on the Kra Isthmus and the river bisects the central zone north-to-south before emptying into the Andaman Sea at Mergui/Myeik. This area is not easy to access for fish collectors due to occasional conflict between the Myanma...

Easy