branch of kenya tree coral colony, tiny polyp in strong current, coralline sponge grow on glass, healthy animals in nano reef

aggregation allmymoneygoestocorals anthozoa aquaculture aquascape aquatic biocenosis biodiversity biology capnella captive chumminess cnidaria coelenterates colorful commensal community conditions controlled coral coralimorph decorative dof ecosystem encrusting environment exotic explore fauna feeding filter flow free group hexacorallia indopacific lateral macro pet pico reef saltwater salty shallow shop soft space tank tentacle tropical underwater widespread wildlife