Ecology of Hapalogenys sennin
 
Main Ref. Iwatsuki, Y. and T. Nakabo, 2005
Remarks Apparently restricted to river mouths and coastal rocky to sandy bottoms of less than 50 m depth. The smallest specimen as collected in a river mouth, however, larger specimens were captured by set net or small trawl between 5-50 m depth over rocky or sandy bottoms, according to local fishermen. SCUBA divers between 1960-1980 observed that the species seemed to be solitary and was commonly observed in small caves, holes, and under overhanging rocks along the Nichinan coast, Miyazaki, southeastern Kyushu Island, from late summer to winter. However, in recent years (post 1990) the species has been only rarely observed (ref. 56360).

Aquatic zones / Water bodies

Marine - Neritic Marine - Oceanic Brackishwater Freshwater
Marine zones / Brackish and freshwater bodies
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Hapalogenys sennin may be found.

Habitat

Substrate
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type
Feeding type Ref.
Feeding habit
Feeding habit Ref.
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition
From individual food items
Ref.
(e.g. 346)
(e.g. cnidaria)
Comments & Corrections
 
 
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