Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Chaenopsidae
(Pike-, tube- and flagblennies)
Etymology: Acanthemblemaria: Greek, akantha = thorn + Greek, emblema, -atos, anything that is nailed, knocked in; also anything with bass or high relief (Ref. 45335).
Environment / Climate / Range
Marine; reef-associated; depth range 1 - 2 m (Ref. 13293). Tropical; 18°N - 15°N, 90°W - 86°W (Ref. 56275)
Length at first maturity / Size / Weight / Age
Maturity: Lm 1.4, range 1 - ? cm
Max length : 1.8 cm SL male/unsexed; (Ref. 51564)
Morphology | Morphometrics
(total): 18 - 20;
spines: 2. Species distinguished by: well-developed cranial spines (not short and blunt) on nape posterior to orbital flange in 2 groups (one group on each side of the dorsal midline), each group with 8 to 11 spines; patch of cranial spines on nape ends anterior to supratemporal commissural pore; inner rim of posterior infraorbital bone smooth; dorsal-fin spines 18 to 20; total dorsal-fin elements usually 38 or fewer; nasal cirri with fewer than 6 (usually 2 or 3) free tips on each side; supraorbital cirrus moderately to strongly branched; two or more rows of teeth on each palatine bone; no large, eye-diameter sized dark blotch on side of head posterior to eye; black spot present or absent in spinous dorsal fin; no white stripe along ventral midline of head in life. Common amongst Chaenopsids: small elongate fishes; largest species about 12 cm SL, most under 5 cm SL. Head usually with cirri or fleshy flaps on anterior nostrils, eyes, and sometimes laterally on nape; gill membranes continuous with each other across posteroventral surface of head. Each jaw with canine-like or incisor-like teeth anteriorly; teeth usually also present on vomer and often on palatines (roof of mouth). Dorsal-fin spines flexible, usually outnumbering the segmented soft rays (numbering 7 to 37), spinous and segmented-rayed portions forming a single, continuous fin; 2 flexible spines in anal fin; pelvic fins inserted anterior to position of pectoral fins, with 1 spine not visible externally and only 2 or 3 segmented (soft) rays; all fin rays, including caudal-fin rays, unbranched (simple). Lateral line absent. Scales absent (Ref.52855).
Western Central Atlantic: Belize.
Lives in burrows made by invertebrates (usually those of sipunculids) in dead corals in shallow water (<5 m) (Ref. 51564).
Springer, V.G. and T.M. Orrell, 1996. Catalog of type specimens of recent fishes in the National Museum of Natural History, Smithsonian Institution, 5: Chaenopsidae, Clinidae, Dactyloscopidae, Labrisomidae, and Tripterygiidae. Smithson. Contrib. Zool. 576:38.
IUCN Red List Status (Ref. 90363)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=-2.33000 (nan - nan), b=3.08 (2.86 - 3.30), based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.0 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .