adult pencilfish healthy pets in nature biotope aquarium, dim light with brown tannin stained water, ornamental blackwater

adult amazonia amazonian america animal aqua aquarium aquatic background beckfordi biotope blackwater blurred brazilian brown careful characin colourful copy decorative design detail dim ecology endemic exotic fauna fish free freshwater golden habitat hard healthy instinct keep lebiasinidae light low nannostomus natural nature negro ornamental pencil pencilfish pets piaba project protection red rio scape shoal south space stained tank tannin underwater vulnerable water yellow