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Syngnathiformes (Pipefishes and seahorses) >
Syngnathidae (Pipefishes and seahorses) > Syngnathinae
Etymology: Hippocampus: Greek, ippos = horse + Greek,kampe = curvature (Ref. 45335); waleananus: Named for its type and only confirmed locality Walea Island, Sulawesi, Indonesia, where this species occurs and the Latin nanus for "dwarf".
Taxonomic Remarks
Junior synonym in Lourie et al., 2016; valid in ECoff., 2023.
البيئة: الوسط / المنطقة المناخية / نطاق العمق / نطاق التوزيع
البيئة
بحري قاعية التغذية و المعيشة; غير مهاجرة; نطاق العمق 5 - 20 m (Ref. 80667). Tropical
Western Central Pacific: Indonesia.
الحجم / وزن / العمر
النضج: Lm ?  range ? - ? cm
Max length : 1.8 cm SL ذكر/ مختلط الجنس; (Ref. 80667)
وصف مختصر
مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشعة الظهرية الناعمة (المجموع) : 12. This species is distinguished by the following characters: size extremely small (height 1.68 cm, 1.78 cm SL); trunks rings 12; tail elongate, 32 tail rings; D 12; pectoral fin rays 9; no anal fin (at least in one sex); apparently eggs brooded within trunk; medium length snout which lacks a bulbous tip; coronet raised and angular; fused gill openings on midline behind the coronet supported by raised cleithral girdle; enlarged knob-like structures on head and trunk; paired laterally directed knob-like structures and each with short fleshy filament on superior trunk ridge of the fifth trunk ring; last 28 tail rings each with small paired knobs on inferior tail ridge, fifth, ninth and twelfth tail rings with bilaterally paired enlarged knob-like structures on superior tail ridges. Colouration: pale pinkish to yellowish with red to brown blotches, radiating bands from eye; body protuberances are white, appearing as white spots (Ref. 80667).
Body shape (shape guide): other; Cross section: angular.
Found in association with the soft coral Nephtea, but has also been observed swimming lengthy distances from one coral to the next (Ref 90102).
دورة الحياة وسلوك التزاوج
النضج | التكاثر | وضع البيض | بيض | الخصوبة | اليرقات
Male carries the eggs in a brood pouch (Ref. 205).
Short, G., R. Smith, H. Motomura, D. Harasti and H. Hamilton, 2018. Hippocampus japapigu, a new species of pygmy seahorse from Japan, with a redescription of H. pontohi (Teleostei, Syngnathidae). ZooKeys 779:27-49. (Ref. 118476)
حالة القائمة الحمراء للاتحاد الدولي لحفظ الطبيعة والموارد الطبيعية (Ref. 130435: Version 2025-2 (Global))
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تقديرات تستند إلى النماذج
مؤشر التنوع الشُعبي الوراثي (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00176 - 0.01132), b=3.00 (2.78 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
مستوى غذائي (مرجع
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
المرونه (مرجع
120179): عالي, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أقل من 15 شهر (Preliminary K or Fecundity.).
ضعف الصيد (Ref.
59153): Low vulnerability (10 of 100).
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