tubenose goby, aggressive invasive dwarf saltwater species of black sea, brown algae grow on coquina stone in marine biotope

adult aggressive algae animal aqua aquaculture aquarist aquarium aquascape aquatic behaviour biodiversity biotic biotope black brackish brown captive clear coldwater conditions controlled coquina decorative design discovery dof dwarf ecology endemic environment european exotic experienced fascinating fauna fish fishkeeping free front glass goby grow ichthyology instinct invasive life look macro marine marmoratus natural nature organism pet pobiidae pontocaspian protection proterorhinus reef saltwater salty sea shallow shell space species spotted stone tank temperate tubenose underwater vulnerable water widespread wild