Sciadonus longiventralis Nielsen, 2018

Nielsen, Jørgen G., Pogonoski, John J. & Appleyard, Sharon A., 2019, Aphyonid-clade species of Australia (Teleostei, Bythitidae) with four species new to Australian waters and a new species of Barathronus, Zootaxa 4564 (2), pp. 554-572 : 568-569

Sciadonus longiventralis Nielsen, 2018

Table 1, Figs. 1 , 13

Sciadonus longiventralis Nielsen, 2018: 182 (type locality off New South Wales)

Holotype. NMV A 5672 , male, 70 mm SL, off southern NSW, 35°00.00’S, 151°16.30’S to 34°54.42’E, 151°13.36’E, RV Franklin, st. FR5/86, 5 m otter trawl, 1100 m, 15 July 1986.

Diagnosis. Sciadonus longiventralis differs from the other four Sciadonus species by the following combination of characters: No distinct black spots dorsally and along midbody; dorsal fin rays 87; precaudal vertebrae 39; pelvic fin length 3.5 % SL; predorsal length 28.5 % SL.

Size. Only known from 70 mm holotype.

Distribution ( Fig. 1 ). Sciadonus longiventralis is known from the holotype trawled off southern NSW at 1100

m.

Figures

FIGURE 1. Records of aphyonid-clade species in Australian waters including the non-Australian paratypes of Barathronus algrahami n. sp. Some symbols represent more than one specimen (Image © NASA, TerraMetrics, Google Earth).

FIGURE 13. Sciadonus longiventralis, NMV A 5672, holotype, male, 70 mm SL (Image: Marcus Krag).