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Microsynodontis polli

Pygmy Synodontis

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Last revised 2026Edit this page

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Microsynodontis polli
Microsynodontis polliHippocampus-Bildarchiv

Quick factsEdit

Max size
40mm SL1.6in SL
Aquarium size
45 × 30cm18 × 12in
Temp
24–27°C75–81°F
pH
6.8–7.5
Hardness
10–15dGH

Difficulty3 of 8 measures

Moderate

How the rating is worked out

Space
medium tank
Water
needs a steady pH
Temp
needs a steady temperature
Diet
unknown
Temperament
unknown
Social
unknown
Compatibility
unknown

Other demands

Each of these can raise the rating on its own, whatever the measures above say.

Hardiness
unknown

The pygmy synodontis, Microsynodontis polli, is a small catfish from the upper Niger basin in Liberia and Guinea, growing to around 40 mm SL. It is sometimes sold mislabelled as Synodontis sp. 'Nyong' or M. batesii but lacks the distinct body barring of that species. New imports are often delicate, and it is quite shy, so it should not be kept with aggressive or very vigorous fish.

Distribution

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A West African species found in Liberia and Guinea, where it inhabits parts of the Upper Niger river basin..

A West African species found in Liberia and Guinea, where it inhabits parts of the Upper Niger river basin..

Aquarium size

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Standard length
40mm SL1.6in SL
Aquarium base
45 × 30cm18 × 12in
Volume
~41litres~11US gal

45 ∗ 30 ∗ 30 cm18 ∗ 12 ∗ 12 in - ~41 litres~11 US gal.

Maintenance

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A dimly lit aquarium with a soft substrate and rocks, pieces of driftwood and twisted roots arranged to form hiding places suits this species. Lighting should be dim. Plants are appreciated but not essential.

Water conditions

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Temperature
24–27°C75–81°F
pH
6.8–7.5
Hardness
10–15dGH

Temperature: 24 – 27 °C75 – 81 °F

pH: 6.8-7.5

Hardness: 10-15 dH

These recommendations come from this profile’s own figures. They contain affiliate links, so we may earn a commission.

Frozen, live and dried foods are all accepted.

Behaviour and compatibility

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M. polli can be combined with most peaceful species successfully. The most appropriate tankmates include African tetras, dwarf cichlids such as Pelvivachromis or Anomalochromis and small mormyrids. It should not be kept with aggressive or very vigorous fish as it is quite shy. It will not fight with conspecifics and can be kept in groups with no problems.

Sexual dimorphism

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Mature females are rounder in the belly than males.

Reproduction

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Unrecorded in aquaria.

Notes

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There are a dozen described species of Microsynodontis but most are not seen in the hobby. This species is one of the commoner ones however. Microsynodontis are much smaller than Synodontis species, with M. batesii being the largest. They can be distinguished from Synos and the similar Mochokiella by the rounded or slightly forked caudal fin. The caudal fin is highly forked in the other genera. Interestingly in Microsynodontis the eyeball is fixed and cannot be moved unlike in Synodontis which has a moveable eye.
Care should be taken when acclimatising Microsynodontis as they are often quite delicate when first imported. This species sometimes seen for sale labelled incorrectly as Synodontis sp. "Nyong" or M. batesii. Unlike batesii it has no distinct barring on the body.

Distribution

Profile completeness18 of 24

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