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).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. (Ref. 13293)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
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=0.00457 (0.00181 - 0.01153), b=3.08 (2.86 - 3.30), based on LWR estimates for this Family-body shape (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) .