Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Grammatidae
Etymology: Gramma: Greek, gramma, atos = signal, mark (Ref. 45335). More on author: Poey.
Environment / Climate / Range
Marine; reef-associated; depth range 1 - 60 m (Ref. 9710), usually 1 - 40 m (Ref. 27115). Tropical; 22°C - 27°C (Ref. 27115)
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 3 - ? cm
Max length : 8.0 cm TL male/unsexed; (Ref. 7251)
Western Central Atlantic: Bermuda, Bahamas, and Central America to northern South America.
Often found in caves or under ledges. Swim with belly toward substratum, thus under ledges seen upside down. Feed on ectoparasites of other fishes (Ref. 5521). Males show various types of nest care behavior (Ref. 35580). Retreat into recesses when alarmed (Ref. 9710). Have been reared in captivity (Ref. 35420).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mouthbrooding in this specimen has not been supported by any evidence (Ref. 35580). Prior to spawning, some males established nest sites, using small holes and crevices in the substratum. Females traveled to male nests for egg deposition around dawn. Eggs deposited within the nests were tended by males that established the nests. Males display four types of nest care behaviour: guarding, nest maintenance, detritus clearing,and simple nest entering (Ref. 35580).
Asoh, K. and T. Yoshikawa, 1996. Nesting behavior, male parental care, and embryonic development in the fairy basslet, Gramma loreto. Copeia 1996(1):1-8. (Ref. 35580)
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
= 0.5314 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.41 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .