Pseudancistrus sidereus explained

Pseudancistrus sidereus is a species of armored catfish known only from the upper Orinoco basin in Amazonas state, Venezuela.^[1]

This is a fairly large loricariid (up to 17.6cm (06.9inches) standard length), and is distinguished from its congeners by a strong keel on the caudal peduncle and the colour scheme which is generally very dark with bright white or yellow spots on the upperside.^[2]

Notes and References

1. Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus. Zootaxa. 628. 1–15. 2004. Armbruster, J.W.. 10.11646/zootaxa.628.1.1 .
2. Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus. Zootaxa. 628. 1–15. 2004. Armbruster, J.W.. 10.11646/zootaxa.628.1.1 .