Liosomadoras morrowi
False Jaguar Catfish
Last revised 2026Edit this page
On this page11 sections
Quick factsEdit
Difficulty4 of 8 measures
- Space
- large tank
- Water
- needs a steady pH
- Temp
- flexible
- Diet
- unknown
- Temperament
- peaceful
- Social
- unknown
- Compatibility
- unknown
Other demands
Each of these can raise the rating on its own, whatever the measures above say.
- Hardiness
- unknown
The false jaguar catfish, Liosomadoras morrowi, is an auchenipterid catfish from the Río Ucayali basin in Peru. It is often confused with its congener L. oncinus, from which it differs in its duller patterning. Nocturnal, peaceful and shy, it will eat small fish during the hours of darkness, and fertilisation is internal, with the male's extended anal fin used in a similar way to a livebearer's gonopodium.
Distribution
EditHabitat
Write a noteEditThe main river and its tributaries.
Aquarium size
Write a noteEdit120 ∗ 30 ∗ 30 cm48 ∗ 12 ∗ 12 in - ~108 litres~29 US gal, larger if more than one is to be kept.
Maintenance
Write a noteEditThis is a nocturnal fish, so dim lighting is required to make it feel secure. Plenty of cover should also be provided, particularly if you're keeping several fish together. Smooth rocks, driftwood, lengths of pvc piping and plants that can survive under low levels of light, such as Anubias sp., java fern and Vallisneria can all be used.
Water conditions
EditTemperature: 20 – 25 °C68 – 77 °F
pH: 6.0-7.0
Hardness: 2-10°H
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Diet
Write a noteEditUnfussy. It relishes live and frozen foods such as bloodworm, earthworms etc., as well as sinking dried foods. Add food after lights out to ensure it receives its share.
Behaviour and compatibility
Write a noteEditPeaceful and shy, but will eat small fish during the hours of darkness. Ideally, keep it in a South American biotope aquarium, with similarly-sized characins, cichlids and other peaceful catfish such as Corydoras sp. and Loricariids. It is sometimes territorial with its own kind, but several can be kept in a suitably-sized aquarium if lots of cover is provided.
Sexual dimorphism
Write a noteEditMales have an extended anal fin, which is used in a similar fashion to the gonopodium possessed by livebearers.
Reproduction
Write a noteEditNot thought to have been achieved in aquaria. Fertilisation occurs internally.
Notes
EditOften confused with its congener L. oncinus, the false jaguar cat can be distinguished by its less attractive, duller patterning. It's a good bottom dweller for the larger community.
Species images · 1
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Also missing: taxonomic authority, etymology.
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