Cat-eLog Right Heptapteridae Right Heptapterus  |  | 

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Scientific Name Heptapterus mbya  Azpelicueta, Aguilera & Mirande, 2011
Common Name
Type Locality Arroyo Moreno at Ruta Provincial 202, 26°54'24"S, 54°54'50"W, río Paraná basin, Misiones Province, Argentina.
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Identification Deprá et al. (2022) redescribed the genus Heptapterus as having the following shared features: (1) Adipose fin extensively fused with the caudal fin; (2) caudal fin non-bifurcate (i.e., caudal fin not divided in two lobes; vs. bifurcate, with distinct dorsal and ventral lobes); (3) dark bars and stripes on back of trunk (vs. absence of dark bars and stripes on back of trunk); (4) 5-6 pairs of pleural ribs (vs. 8-9 ribs); (5) elongate body with a head length of 16.1-24.9% (vs. 25.5-27.3%); (6) posterior extension of mouth rim short, with rictus barely reaching vertical line through posterior nostril (vs. posterior extension of mouth rim longer, with rictus reaching vertical line between posterior nostril and eye); (7) premaxillary tooth plate with no posterolateral extension, or with a small one (vs. with a very long posterolateral extension); (8) pelvic-fin insertion posterior to vertical through insertion of dorsal fin (vs. anterior) and anal-fin insertion posterior to vertical through adipose-fin origin (vs. anterior); (9) 10-23 anal-fin rays (vs. 33-46); (10) anal and caudal fins separated (vs. anal fin confluent with the caudal fin); and (11) supraorbital pore 6 (s6) fused or closer to each other (vs. separate and closer to the eye than to each other).
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Distribution

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IUCN Red List Category
Vulnerable
, range map and more is available on the IUCN species page. Last assessed 2020.
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Breeding Reports There is no breeding report.
Down Further Information
Reference Revue Suisse de Zoologie v. 118 (no. 2), pp 320, Figs. 13.
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Last Update 2020 Dec 30 00:53 (species record created: 2016 May 11 16:18)