Home › Words › G › glowbellyglowbellyglowbelly means a benthopelagic predatory fish with a bioluminescent organ on its ventral surface (Acropoma japonicum.EtymologyFrom glow + belly, in reference to their ventral bioluminescence.nouna benthopelagic predatory fish with a bioluminescent organ on its ventral surface (Acropoma japonicumDefinitions & examples from Wiktionary (CC BY-SA 3.0).