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Lucas Vieira/Rafael Oliveira (1) Johnny Jensen's Photographic Library (2)

Description: Vertebrae: 26. This species is distinguished from its congeners except H. elongatum, by the presence of a patch of odontodes on the anterolateral surface of the cleithrum at the opening to the branchial chamber. It is distinguished from H. elongatum by having a shorter caudal peduncle, with caudal-peduncle length 26.0-36.0 (32.0) (vs. 32.3-36.3 (34.4); t-test, p < 0.001); with a deeper, more robust caudal peduncle, caudal-peduncle depth 8.8-11.0 (10.1) (vs. 7.9-8.8 (8.4); t-test, p < 0.001); by the round to slightly acute snout (vs. snout appearing pointed due to slight lateral inflexion between rostral plate and first infraorbital); by fewer plates along medial series 21-22 (22) (vs. 23). Habitat: It is the only species known for northeastern coastal rivers. Colouration: By having light brown caudal-fin lobes (vs. dark lobes). Aquarium Care: Will not bother other fish in the aquarium. They like to hang on to thin stalks of plants so they can see around it with their laterally located eyes. Provide shaded hiding areas in the tank with rocks or cave-like structures. Diet: Feed an all round diet but prefers a vegetable diet such as algae, spirulina tablets and cucumber/courgette.

None

None

Loricariidae

South America: Across the central and lower Rio Amazonas basin; including Rio Tocantins basin.

11.0cm. (4¼ins)

18-26°c (63-79°f.)

6.0-7.0.

Aquino, A.E. and S.A. Schaefer 2010 Systematics of the genus Hypoptopoma Günther, 1868 (Siluriformes, Loricariidae). Bull. Amer. Mus. Nat. Hist. 336:1-110.
Froese, R. and D. Pauly. Editors. 2022. FishBase. World Wide Web electronic publication. www.fishbase.org, ( 08/2022 ).
Vieira LO, Campos DS, Oliveira RF, South J, Coelho MS.P, Paiva MJ.S, Bragança PH.N, Guimarães EC, Katz AM, Brito PS, Santos JP, Ottoni FP (2023) Checklist of the fish fauna of the Munim River Basin, Maranhão, north-eastern Brazil. Biodiversity Data Journal 11: e98632.