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Genus

Akysis

Species
9
Photographed
9 of 9
Difficulty rated
9 of 9
Specimen from southern Thailand.

Akysis hendricksoniHendrickson's Stream Catfish

Alfred, 1966

Max length
50mm SL2.0in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–24°C62–75°F
pH
6.0–7.2

This species is among the few members of the family to have been exported for the aquarium hobby. It can be differentiated from all other Akysis species by the following combination of characters: head length 17.7-26.5% of standard length (SL); head width 25.4-28.7% SL; body depth at anus 13.0-17.0% SL; caudal peduncle depth 8.1-10.1% SL; interorbital di...

Easy
Relatively slim (male?) specimen.

Akysis longifilisSittaung Stream Catfish

Ng, 2006

Max length
53mm SL2.1in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–24°C62–75°F
pH
6.0–7.5

This species is among the few members of the family to have been exported for the aquarium hobby. It can be differentiated from all other Akysis species by the following combination of characters: base of...

Easy
Wild specimen collected from Chanthaburi province, eastern Thailand.

Akysis maculipinnisSpotfin Stream Catfish

Fowler, 1934

Max length
35mm SL1.4in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–24°C62–75°F
pH
6.0–7.5

This species has been exported for the aquarium hobby and ranks among the smaller members of the family. It can be differentiated from all other Akysis species by the following combination of characters: head length 22.0-28.6% of standard length (SL); caudal peduncle depth 8.8-10.7% of SL; anal-fin base length 15.2-19.1% of SL; eye diameter 12-16% of head length (HL); nasal barbel length 57 92% of HL; posession of 3-4 serrae on the posterior edge ofspine; body patterning mottled with indistinct ...

Easy
This species is very similar in appearance to A. longifilis.

Akysis portellusSmallmouth Stream Catfish

Ng, 2009

Max length
43mm SL1.7in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–24°C62–75°F
pH
6.0–7.5

This species is among the few members of the family to have been exported for the aquarium hobby. It can be differentiated from all other Akysis species by the following combination of characters: base ofmeasures 17.1-19.2% of standard length (S...

Easy
Subadult specimen with relatively dark colour pattern.

Akysis prashadiIndawgyi Stream Catfish

Hora, 1936

Max length
62mm SL2.4in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–24°C62–75°F
pH
6.0–7.2

This species is among the few members of the family to be exported for the aquarium hobby though is by no means common. It can be differentiated from a...

Easy
This species has entered the trade in limited numbers.

Akysis pulvinatusKra Stream Catfish

Ng, 2007

Max length
30mm SL1.2in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–23.5°C62–74°F
pH
6.0–7.2

This species has been exported for the aquarium hobby on an extremely limited basis. It can be differentiated from all other Akysis species by the following combination of characters: head length 27.6–29.8% of standard length (SL); head width 21.9–25.1% SL; caudal peduncle depth 9.4–10.3% SL; length ofbase 23.0–25.2% SL; nasal barbel len...

Easy
Individual in the aquarium.

Akysis variusVariable Stream Catfish

Ng & Kottelat, 1998

Max length
40mm SL1.6in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–24°C62–75°F
pH
6.0–7.5

This species is among the smaller members of the family. It can be differentiated from all other Akysis species by the following combination of characters: caudal peduncle length 16.1-19.8% of standard length (SL); caudal peduncle depth 6.5-9.3% SL; length of adipose-fin base 25.6-29.5% SL; interorbital distance 42.0-46.0% of head length (HL), eye diameter 13.0-20.0% HL; length of nasal barbel 44.0-66.0% HL; lateral margins of the head appear straight when viewed from above; possession of 0-5 se...

Easy
Specimen collected in Thailand.

Akysis vespaOrange-Banded Stream Catfish

Ng & Kottelat, 2004

Max length
31mm SL1.2in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–23.5°C62–74°F
pH
6.0–7.5

This species is among the few members of the family to be exported for the aquarium hobby and we've also seen it on sale under various names such as 'orange-banded stone catfish', 'orange micro bumblebee catfish', 'Burmese orange mini bee catfish' or more simply 'wasp catfish'. Though the majority of forms are yellowish to orange in colouration there appears to exist a bright red variant which to date we've only seen in photos.

Easy
This is the only specimen we've seen in the trade to date.

Akysis vespertinusWestern Stream Catfish

Ng, 2008

Max length
35mm SL1.4in SL
Tank
45 × 30cm18 × 12in
Temp
16.5–24°C62–75°F
pH
6.0–7.5

This species is exceptionally rare in the aquarium trade and can be distinguished from congeners by the following combination of characters: snout narrow with head appearing triangular as a resul...

Easy