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Atheriniformes (Silversides) >
Atherinopsidae (Neotropical silversides) > Menidiinae
Etymology: Labidesthes: Greek, labidos = pair of forceps + Greek esthio = to eat; in reference to the shape of the mouth (Ref. 45335); sicculus: Name most likely from Latin 'sicula' meaning small dagger (see Ref. 104856). Others consider the origin of the name from the Latin 'siccus' meaning dried, referring to being found in dried pools (Ref. 10294, 79012).
More on author: Cope.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten pelagiska; ej vandrande (Ref. 126106). Subtropical; 5°C - 20°C (Ref. 13614); 46°N - 25°N
North America: Gulf of Mexico drainages from the Pearl River west to Brazos River including sthe Mississippi River drainage, and the Great Lakes (but not Lake Superior) - St. Lawrence River drainages.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 7.0 range ? - ? cm
Max length : 13.0 cm TL hane/ej könsbestämd; (Ref. 5723); common length : 8.4 cm TL hane/ej könsbestämd; (Ref. 12193); rapporterad maxålder: 2.00 år (Ref. 12193)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 4 - 7; Mjukstrålar i ryggfenan (totalt) : 8 - 12; Taggstrålar i analfenan: 1; Mjukstrålar i analfenan: 19 - 27. This species is distinguished and differs from Labidesthes vanhyningi by the following characters: Labidesthes sicculus have the anterolateral processes of the posttemporals longer than width of the base (vs. L. vanhyningi having the processes shorter than width of base); with a midlateral stripe tapering to insertion of pectoral fin in advance of first dorsal fin (vs. maintaining width or usually expanding, to insertion of pectoral fin in advance of the first dorsal-fin); a ratio of thoracic length to abdominal length greater than 2 (vs. less than 2) (Ref. 104856).
Body shape (shape guide): elongated; Cross section: compressed.
Adults occur near surface of lakes, ponds, and quiet pools of creeks and small to large rivers. Usually found in open water (Ref 5723, 10294). They feed on zooplankton, including copepods, cladocerans, and midge larvae (Ref. 10294).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Werneke, D.C. and J.W. Armbruster, 2015. Silversides of the genus Labidesthes (Atheriniformes: Atherinopsidae). Zootaxa 4032(5):535-550. (Ref. 104856)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Bete: usually
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00241 - 0.00829), b=3.03 (2.86 - 3.20), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.4 ±0.45 se; based on food items.
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (K=3.70; tmax=2).
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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