Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Microdesmidae
(Wormfishes) > Ptereleotrinae
Etymology: Parioglossus: Greek, pareia = jaw + Greek, glossa = tongue (Ref. 45335); caeruleolineatus: Name from Latin 'caeruleo' for blue and 'lineatus' for line, referring to the distinct bright blue stripe running from nape to dorsum of caudl peduncle in males when alive or still fresh.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 0 - 1 m (Ref. 84007). Subtropical
Northwest Pacific: Ryukyus, Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.7 cm SL male/unsexed; (Ref. 84007); 2.6 cm SL (female)
Morphology | Morphometrics
soft rays: 15 - 16;
Vertebrae: 26. This species differs from its congeners in having a gently oblique mouth at an angle of 51-58° (average 55°) to longitudinal axis of body, and in possessing a bright blue stripe running from nape to dorsum of caudal peduncle in male when fresh or alive (Ref. 84007).
This species normally swims in schools during high tide or hides in holes on muddy bottoms
mixed with pebbles around the roots of mangroves in river mouths. During low tide, they leave the holes and gather in schools in the mangroves at a depth of about 1 m (Ref. 84007).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Suzuki, T., T. Yonezawa and J. Sakaue, 2010. Three new secies of the ptereleotrid fish genus Parioglossus (Perciformes: Gobioidei) from Japan, Palau and India. Bull. Natl. Mus. Nat. Sci., Ser. A, (Suppl. 4):31-48. (Ref. 84007)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .