Actinopteri (ray-finned fishes) > Beloniformes
(Needle fishes) > Belonidae
Etymology: Tylosurus: Greek, tylos = callus + Greek, oura = tail (Ref. 45335).
More on author: Rafinesque.
Considered mostly as a subspecies in the literature. Therefore the upraise at species rank here is considered as a provisionally accepted name, until more works are conducted
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-oceanic; depth range 0 - 10 m (Ref. 86942). Subtropical
Eastern Atlantic: Cape Verde, Morocco, and the Mediterranean Sea (Ref. 5757); possibly in Ascension I. (see comments on Ref. 98447 in country and biblio record).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 140 cm SL male/unsexed; (Ref. 3397)
Inhabits offshore waters, but also found in coastal waters. Feeds mainly on small fishes (Ref. 6530). Oviparous (Ref. 205). Eggs may be found attached to objects in the water by tendrils on the egg's surface (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Collette, B.B. and N.V. Parin, 1990. Belonidae. p. 592-597. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 5757)
IUCN Red List Status (Ref. 125652)
Threat to humans
Reports of ciguatera poisoning (Ref. 30911)
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00123 (0.00056 - 0.00270), b=3.12 (2.94 - 3.30), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 4.5 ±0.80 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Very high vulnerability (90 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .