Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Ovalentaria/misc (Various families in series Ovalentaria) >
Opistognathidae (Jawfishes)
Etymology: Opistognathus: Greek, opisthe = behind + Greek, gnathos = jaw (Ref. 45335); to the very elongate upper jaw of the type species of the genus, Opistognathus nigromarginatus (Ref. 128653); cryos: Name 'cryos' from Greek word 'krýos', meaning cold or chilled, indicating that the holotype was collected during a cold snap.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal. Tropical
Northwest Pacific: Taiwan.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 6.5 cm SL male/unsexed; (Ref. 133077)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 11; Dorsal soft rays (total): 11; Anal spines: 2; Anal soft rays: 10; Vertebrae: 26. This species is distinguished from its congeners by the following set of characters: rigid upper jaw, without a distinct flexible lamina posteriorly; D XI,11; A II,10; gill rakers 10-11 + 1 + 19-22 = 31-33; scale rows in lateral series 55; vertebral formula 10 + 16 = 26; dorsal-fin interdigitation pattern S/S/1/1+1/1/; lateral-line ends at base of fourth segmented dorsal-fin ray (15th in total rays); head, nape, dorsal-fin base above lateral line, throat, chest, and pectoral-fin base scaleless; upper two preopercular and fifth mandibular pores bipored; vomer edentate; head mottled with small, dark blotches; dorsal fin with eight blotches along its base; distal portion of membrane between dorsal-fin spines white; body with five horizontal, dark stripes; nape with two dark blotches in front of dorsal-fin origin; and caudal fin with five narrow, dark bands (Ref. 133077).
Cross section: compressed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Su, Y. and H,-S. Ho, 2024. A new species of the jawfish genus Opistognathus from Taiwan,
northwestern Pacific Ocean (Perciformes, Opistognathidae). ZooKeys 1220:165-174. (Ref. 133077)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
Special reports
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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