Edit Akysis portellus
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Name
Scientific name
Akysis portellus
Described by
Authority Ng, Year 2009
Family
Akysidae
Common names
Smallmouth Stream Catfish, Rautenflecken-Zwergwels
Photograph credits
All 2 credited
Summary
The smallmouth stream catfish, Akysis portellus, is a small akysid catfish from the Sittaung River system in southern Myanmar. One of the f…
Size and aquarium
Maximum size
43mm, standard length
Aquarium size
Minimum length 45 cm, Minimum depth 30 cm, Water movement High: fast-flowing river or riffle
Water
Water conditions
Temperature 16.5–24°C, pH 6–7.5
Hardness
2–12dGH
Conductivity
Not recorded
Behaviour
Temperament
Peaceful
Social needs
A shoal or group
Community suitability
Community-safe
Where it lives
Countries, regions, rivers and lakes
Myanmar, Sittaung
Writing
Etymology
Akysis: from the Greek á- (Gr. ἀ), meaning 'not, without' and kýstis (Gr. κύστις), meaning 'bladder', in reference to genus members lacking a swim bladder. por…
Distribution
The type series was collected from Shwe Kyin stream, a minor tributary of the Sittaung (aka Sittang) River system in Bago (formerly Pegu) Region, southern Myan…
Habitat
Members of this genus are near-exclusive inhabitants of swiftly-flowing streams and rivers with substrates generally consisting of any combination of sand, gra…
Aquarium size
A tank with base dimensions of 45 ∗ 30 cm is more than sufficient, even for a group.
Maintenance
Not difficult to keep but should really be provided with a soft, sandy substrate since some of its time is spent completely buried, or with only eyes protrudin…
Water conditions
Not written yet
Diet
Akysis species are primarily nocturnal micropredators feeding on small aquatic crustaceans, worms, insect larvae and other zooplankton. They can be a little pi…
Behaviour and compatibility
Not especially competitive and should not be kept with much larger or more aggressive fishes. Miniature schooling cyprinids such as Boraras, Microdevario or sm…
Sexual dimorphism
Unreported, but sexual dimorphism has been reported in A. alfredi (Ng and Kottelat, 1998)[8], A. fuscus (Ng, 1996)[2] and A. microps (Ng and Tan, 1999)[3]. In …
Reproduction
Unreported, though a short report was published in the description of A. vespa (Ng and Kottelat, 2004)[9], in which a successful spawning event in that species…
Notes
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…
References
References
13 on this profile