夏宫吻鰕虎鱼

The <em>Ctenogobius aestivaregia</em> is a freshwater fish belonging to the family Gobiidae, the gobies — one of the largest families of fishes with well over two thousand recognised species worldwide. Gobies are characterised by fused pelvic fins that typically form an adhesive disc, which many species use to anchor themselves to rocky or sandy substrates in fast-flowing waters and tidal zones. <em>Ctenogobius aestivaregia</em> is associated with freshwater environments, though the genus <em>Ctenogobius</em> also includes brackish and marine species across tropical and subtropical regions of the Americas. Details of habitat and range for this species remain limited in the ichthyological literature; neither body size data nor precise depth range records are currently available. Members of the genus are typically small, bottom-dwelling fishes that feed on invertebrates, algae, and organic detritus. The species epithet aestivaregia may reflect a connection to regal or seasonally defined habitats, though its precise meaning in this taxonomic context is not fully elaborated in current literature. Gobies in tropical freshwater systems often play an important ecological role as prey items for larger predatory fishes and wading birds, contributing to the energy flow within riverine and estuarine food webs.