Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري; المياه العذبة; مياه مخلوطة القاع; مهاجرة بين الياه الملحه و الحلوة لكن ليس للتزاوج (Ref. 46888); نطاق العمق 0 - 15 m (Ref. 45332). Subtropical; 8°C - 24°C (Ref. 4944); 60°N - 12°N, 32°W - 42°E
Eastern Atlantic: western Scotland to Senegal. Also known from the Mediterranean and Black Sea. Indian Ocean: as lessepsian migrant in the Gulf of Eilat and Red Sea (Ref. 5299). Records from Pointe Noire and vicinity might be doubtful.
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm 6.5, range 6 - 7 cm
Max length : 13.0 cm TL ذكر/ مختلط الجنس; (Ref. 49698); العمر: 10 سنين (Ref. 35388)
Neck naked. No black spots in the front end of each dorsal fin (Ref. 35388).
Predominantly marine, but may enter freshwater. Adults occur inshore in intertidal waters, under stones and in pools on sheltered rocky shores with much weed cover. Macrobenthos feeder on hard substrates (Ref. 92840), they feed on crustaceans (larger amphipods, isopods, small crabs) and polychaetes; juveniles eat harpacticoid copepods, amphipods, polychaetes and mites (Ref. 4696). Oviparous (Ref. 205). Fusiform shaped eggs are found in patches of several thousand on undersurface of stones, shells, polychaete tubes or Ciona mantles (Ref. 4696).
Oviparous (Ref. 205). Male guards the eggs deposited by the female under rocks or inside empty bivalve shells until they hatch (Ref. 45332). Larvae remain near the substrate until they assume the cryptobenthic behavior of the adults (Ref. 45332). Are repeat spawners (Ref. 4696).
Maugé, L.A., 1986. Gobiidae. p. 358-388. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 4343)
IUCN Red List Status (Ref. 130435)
استخدامات بشرية
مصائد: غير مهمة تجارياً; حوض مائي: احواض مائية عامة
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 9.8 - 20.2, mean 17.7 °C (based on 823 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00672 - 0.01128), b=3.10 (3.06 - 3.14), in cm total length, based on LWR estimates for this species (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.3 ±0.45 se; based on food items.
Generation time: 2.7 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
المرونه (Ref.
120179): وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (K=0.41; tm=0-3; tmax=10; Fec=1,054).
Fishing Vulnerability (Ref.
59153): Low vulnerability (19 of 100).
Nutrients (Ref.
124155): Calcium = 215 [96, 483] mg/100g; Iron = 1.44 [0.78, 2.74] mg/100g; Protein = 18.8 [16.9, 20.4] %; Omega3 = 0.363 [0.160, 0.702] g/100g; Selenium = 14 [7, 29] μg/100g; VitaminA = 17.7 [5.5, 52.3] μg/100g; Zinc = 1.39 [0.94, 2.08] mg/100g (wet weight);
