Found in coastal brackish to marine localities. Fertilization is internal and eggs are attached to the substrate via adhesive filaments .
: elongated.
Behavioural data for Gulaphallus Panayensis is currently being reviewed.
Diet information for Gulaphallus Panayensis is currently being compiled.
Pelvic fins in males modified to form part of a complex thoracic clasping organ .
Marine; brackish; benthopelagic. Tropical Central Pacific: Panay, Philippines.
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