Actinopteri (ray-finned fishes) > Blenniiformes
(Blennies) > Chaenopsidae
(Pike-, tube- and flagblennies)
Etymology: Neoclinus: Greek,neos = new + Greek, klinein, kline = sloping and bed, due to the four apophyses of sphenoid bone (Ref. 45335); nudiceps: Name from Latin 'nudus' meaning naked, and 'caput' for head ('ceps', an adjectival derivative), refers to the apparent (but not actual) lack of cirri on the head.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 7 - 9 m (Ref. 85569), usually - m (Ref. ). Subtropical; 0°C -
Northwest Pacific: Sea of Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.6 cm SL male/unsexed; (Ref. 85569); 4.0 cm SL (female)
Morphology | Morphometrics
(total): 21 - 23;
soft rays: 26 - 28;
Vertebrae: 45 - 46. This species is distinguished from all other congeners by the following set of characters: continuous lateral-line canal with single row of pores; orbit with 2 cirri; no true ocellus on anterior part of dorsal fin; low dorsal fin, not elevated anteriorly in either sex; absence of narrow membrane along anterior edge of first dorsal-fin spine. Neoclinus nudiceps differs from Neoclinus monogrammus in having the following characters: lateral-line canal with 3-5 pores and reaching to below 3rd to 4th dorsal-fin spine (vs. 9-15 pores, reaching to below 6th to 9th dorsal-fin spine); counts of supraorbital cirri tips, the anterior and posterior cirri with 2-6 and 1-2 tips, respectively (vs. 10-28 and 3-14 tips, respectively); male with no conspicuous spots on head (vs. male color pattern on head with scattered reddish spots); body depth in proportion to standard length 13.0-15.4% (vs. 11.3-13.4%); head depth in proportion to head length 56.6-60.6% (vs. 51.2-58.0%) (Ref. 85569).
Individuals usually occupy a hole in the rocky substrate, a habit similar to that of its congeners (Ref. 85569).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Murase, A., M. Aizawa and T. Sunobe, 2010. Two new chaenopsid fishes, Neoclinus monogrammus and Neoclinus nudiceps (Teleostei: Perciformes: Blennioidei), from Japan. Species Diversity 15(2):57-70. (Ref. 85569)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00183 - 0.01143), b=3.08 (2.86 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.7 ±0.2 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .