I’ve attached a picture of a fish that I acquired about 6 years ago. He was the only one of his kind and Is chilled out, non aggressive fish. He’s about 5 inches long, 2 inches tall and of thick set. He was obviously smaller when I got him but still quite a Good size.
Does anyone have any suggestions as to what it could be?
I'm not great at identifying fish other than those with particularly distinguishing/distinctive features or those I'm familiar with as potential occupants of my own tank.
My initial thought was a filament/blackspot barb with this picture https://www.fishbase.se/summary/Puntius-filamentosus looking the most similar, but, the more I look at other pictures of filament barbs and the picture of your own lovely fish again, the less confident I am. Is / has there been any colouring of the fins of your fish?
I agree (and partly the reason for my earlier lack of conviction) - although the first link (Fishbase) doesn't show those markings to the same extent. Colourings and markings can disappear with age in fish (and body shape and other factors). Lighting can also show various features to a greater/lesser degree. I haven't come up with an alternative ID yet but watch this space in case I do...