Ok everything sounds nice all around. WC schedule and Water Quality, Great. Feeding, very good except okiko isn’t great food imo and freeze dried is not easy on the digestive track. Tank temp is ideal while he is growing but you’re going to want to dial that back a bit too 26-28 when he’s you can tell he’s done growing. Definitely upgrade too the full sized 4 foot tank asap. 55g will do the trick. That’s major setback right now as far as growth and development goes.
I think don’t think the genetics alone will limit the life expectancy to that degree all though it very well could. It’s more so going to depend on the quality of husbandry/care you maintain over his lifespan. You could get more like 4-6years ideally If you keep a healthy fish. Short body isn’t too big of a deal. I’m sure there are some increased risks but again if you keep a healthy fish it really won’t hinder lifespan considerably. Blood parrots the most common SB fish seem to have a long life span, many I’ve seen live 10+years, now Flowerhorn of course, have a different case but short body isn’t a major cause but can be a correlation. In breeding, it’s a very low threshold for short body showing up in batches. You don’t even have to give much inbreeding at all or any at all for that matter to breed a shortbody fish.
