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Down arrow Cat-eLog Data Sheet
Scientific Name Ancistrus malacops  (Cope, 1872)
Common Name
Type Locality Río Ambyiacu, Peru.
Synonym(s) Chaetostomus malacops
Pronunciation an SISS truss
Etymology The name Ancistrus is derived from the Greek word agkistron, meaning hook, in reference to the interopercular odontodes that are hooked. 
Down arrow Species Information
Size 77mm or 3" SL. Find near, nearer or same sized spp.
Identification Mature males and sometimes females have soft tentacles (bushy fleshy growths) on the snout - this is unique to the genus Ancistrus.
Sexing Males develop soft tentacles on the head and while sometimes females also do, it is never to the grand extent of those found on that of the conspecific male.
Down arrow Habitat Information
Distribution South America: Ampiyacu River basin in Peru.
Amazon, Upper Amazon, Ampiyacu (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2014.
Down arrow Husbandry Information
Feeding Ancistrus should be fed mainly on vegetarian foods. Prepared foods include algae wafers and spirulina based sinking food. Vegetables such as courgette/zucchini, and (English) cucumber are an excellent addition to the diet, along with the odd, small amount of more meaty foods.
Compatibility A good complement to most aquariums, they are not aggressive to other species. Males may fight over territory if kept in too small a tank.
Suggested Tankmates Appropriate with most community fish that aren't overly big or aggressive.
Breeding All Ancistrus species are cave-breeders, where the male looks after the eggs and young fry.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Proceedings of the Academy of Natural Sciences of Philadelphia v. 23, pp 287, Pl. 5 (figs. 2a-b).
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Last Update 2020 Oct 28 16:59 (species record created: 2008 May 31 04:24)