Saccogaster parva
Saccogaster parva Cohen & Nielsen, 1972
Also calledjeskyňovka drobná (ces)
First described in: Cohen, D. M.; Nielsen, J. G. (1972). A review of the viviparous ophidioid fishes of the genus Saccogaster. <em>Proceedings of the Biological Society of Washington.</em> 85 (39): 445-467.
Descriptions from checklists and floras indexed by GBIF
biology_ecology
Biology and distribution (Fig. 26). Caught on the bottom on the upper continental slope at a depth of 500 m. Known only from the holotype off southern Brazil.
Revision of Hastatobythites and Saccogaster (Teleostei, Bythitidae) with three new species and a new genus
description
Description. The principal meristic and morphometric characters are shown in Table 5. Body compressed and relatively short. Scales absent. Lateral line continuous, originating above preopercle descending gradually to midline over anus and ending close to basis of caudal fin; ca. 20 lateral line papillae. Dorsal fin origin above proximal part of pectoral fin and anal fin origin well behind midpoint of fish. Pectoral fins end halfway to anus. Pectoral peduncle prolonged. Head compressed with blunt snout. Opercular spine flat, preopercular spine hidden. Posteror, vertically expanded part of maxillary strongly sheathed dorsally. Anterior gill arch (Fig. 14 E) with two knobs on upper branch, a developed raker in angle, and lower branch with 5 – 6 developed rakers followed by 6 – 8 knobs. Pseudobranchial filaments 2. Ovaries with developing eggs. Axial skeleton (from radiographs): Number of precaudal vertebrae 16. Anterior neural spine 1 / 3 length of second spine. Neural spines 2 – 5 decreasing in length and with pointed tips. Neural spines 6 – 10 with blunt tips and all remaining neural and haemal spines with pointed tips. Parapophyses developed on vertebrae 7 – 16. Pleural ribs on ver
Revision of Hastatobythites and Saccogaster (Teleostei, Bythitidae) with three new species and a new genus
diagnosis
Diagnosis. Saccogaster parva differs from all other Saccogaster species in having 5 – 6 developed rakers on anterior gill arch and no spines on frontal plate and ethmoid. Also the following combination of characters is diagnostic: Skin thin and transparent; numerous neuromasts below translucent head skin arranged in five distinct clusters; scales absent; three developed rakers on anterior gill arch 3 – 4 times length of gill filaments; palatines with one row of teeth; antero-ventrally directed spine on lower angle of preoperculum; prolonged pectoral peduncle; precaudal vertebrae 16 and total vertebrae 54; fin rays in dorsal 91, anal 64 and pectoral 14. Similarity. Saccogaster parva and S. nikoliviae are the only species with numerous, developed neuromasts on the head, but they differ in other characters such as number of developed gill rakers 6 vs. 3 in S. nikoliviae, absence of scales vs. present in S. nikoliviae and no spines behind eyes or on ethmoid vs. present in S. nikoliviae.
Revision of Hastatobythites and Saccogaster (Teleostei, Bythitidae) with three new species and a new genus
materials_examined
Material examined (1 specimen, 58 mm SL). Holotype: ZMH 25268, female, 58 mm SL, off southern Brazil, 24 ° 21 ’ S, 43 ° 54 ’ W, R / V Walther Herwig, st. 90 / 68, bottom trawl, 500 m, 2 Mar. 1968.
Revision of Hastatobythites and Saccogaster (Teleostei, Bythitidae) with three new species and a new genus
Where it has been recorded
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
Searching the stacks…
Every page naming Saccogaster parva in the Biodiversity Heritage Library →
From the GBIF Backbone Taxonomy and occurrence records (GBIF.org), with Wikipedia and the Source Library. GBIF species 2346270.