Actinopteri (ray-finned fishes) > Syngnathiformes
(Pipefishes and seahorses) > Syngnathidae
(Pipefishes and seahorses) > Syngnathinae
Etymology: Festucalex: Latin, festuca = stalk, straw coloured (Ref. 45335). More on author: Gilbert.
The species Festucalex amakusensis (Tomiyama ,1972) and Festucalex townsendi (Duncker, 1915) are considered as valid in Eschmeyer (CofF ver. Mar. 2011: Ref. 86697) following Kuiter (2009: Ref. 86771).
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 18 - 81 m (Ref. 58302), usually - m (Ref. ). Tropical; 0°C -
Indo-Pacific: Mozambique to Hawaii.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.2 cm SL male/unsexed; (Ref. 5316)
Morphology | Morphometrics
Benthopelagic (Ref. 58302). Reported to have been dredged in 80.5 m (Ref. 4281). Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205). It is exported as an aquarium species from Hawaii.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Male carries the eggs in a brood pouch (Ref. 205).
Dawson, C.E., 1985. Indo-Pacific pipefishes (Red Sea to the Americas). The Gulf Coast Research Laboratory Ocean Springs, Mississippi, USA. (Ref. 5316)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: of no interest; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 20.7 - 28.3, mean 26.9 °C (based on 291 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5039 [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
): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .