Ancistomus sp. L163
Big Spot Peckoltia · L163
Formerly Peckoltia sp.
Last revised 2026Edit this page
On this page10 sections
Quick factsEdit
Difficulty3 of 8 measures
- 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 big spot peckoltia (L163) is an undescribed suckermouth catfish collected from the Rio Pará in the Brazilian Amazon. Trade fish are often confused with the very similar L013, and the two are only easily told apart as they mature: L163 keeps its spotted pattern while L013 tends to become duller. It is placed in the genus Ancistomus. Newly imported fish should have a rounded belly and eyes that are not sunken.
Distribution
EditSo far it's only been collected from the Rio Pará in the Brazilian Amazon.
Habitat
Write a noteEditNo specific data is available.
Aquarium size
Write a noteEditA 75 ∗ 30 ∗ 30 cm30 ∗ 12 ∗ 12 in - ~68 litres~18 US gal is easily big enough to hold one or two of these.
Maintenance
Write a noteEditIt does well in a stream-type setup with a gravel or sand substrate, rounded stones, rocks, water worn wood and a high level of flow. Live plants tend not to do so well under these conditions, although some of the tougher varieties such as Vallisneria and Anubias sp., java fern (Microsorum pteropus)or java moss (Vesicularia dubyana) should be ok.
You can also keep this species in a more general set-up, provided the water is clean and well-oxygenated.
Water conditions
EditTemperature: 23 – 26 °C73 – 79 °F
pH: 6.5 - 7.2
Hardness: 5 - 12°H
These recommendations come from this profile’s own figures. They contain affiliate links, so we may earn a commission.
Diet
Write a noteEditIt is omnivorous and should be offered a varied diet. Alternate sinking dried foods with vegetable matter such as blanched spinach or Spirulina and live and frozen stuff such as bloodworm or Daphnia. Some specimens also develop a taste for the leaves of softer-leaved aquarium plants.
Behaviour and compatibility
Write a noteEditA good choice for the community tank, being both attractive and of manageable size. It can be kept with most peaceful species, but we prefer it to see it in a South American set-up with characins, peaceful cichlids and catfish such as Corydoras and other Loricariids. If you're keeping more than one, ensure each has it's own refuge and expect some territorial confrontations.
Sexual dimorphism
Write a noteEditUnknown.
Reproduction
Write a noteEditUnreported in the hobby.
Notes
EditKnown in the trade as the big spot peckoltia, this species is placed in the genus Ancistomus. It remains undescribed. It's also often confused with the very similar-looking L013, another undescribed fish. These two species can only easily be distinguished as they mature, as L163 retains its spotted patterning, while L013 tends to become somewhat duller.
When buying this fish check that it has a rounded belly and that its eyes aren't sunken. These are classic signs of emaciation in newly imported Loricariids, and fish in this condition do not often survive for long.
How the name has changed
Moved from Peckoltia sp. to Ancistomus sp. L163.
Distribution
Profile completeness16 of 24
Community
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