I would like to think that most people come to forums such as this to learn, and learn from others. With that in mind, misinformation, or just plain bad advice, doesn't foster sound husbandry.
So in my mind listing off species of fish in a cavalier manner, as though anyone can keep them given the correct research, or permit, is kind of ridiculous. I have already pointed out one major flaw in this discussion, suggesting that a member could keep a sturgeon, when she clearly keeps koi in her pond, as though the former would be ok due to it tolerating warmer temps than many sturgeon species. Diet wise, these two species could not co-exist, without one of them suffering over the long haul. In fact, the fish would most likely suffer in the short term as well. Stunting and premature death would follow in one, and/or fatty liver deposits, and premature death in the other.
Coho Salmon. Asinine to even suggest this species. Ditto to Arctic Char.
I live in NW Canada where winter temps can reach below -40F, and even I couldn't keep these fish over the summer months due to their cold water requirements. Not to mention their adult sizes, and the tank size required to keep them in a humane manner, indoors.
From the net ….
Arctic char are more cold-water tolerant than many other trout and salmon and exhibit maximum growth at temperatures of 12–15 °C (Delabbio, 1995, Larsson and Berglund, 1998). In addition, unpublished research from Iceland indicates that the optimum temperature for grow-out of Arctic char may be closer to 10 °C (Thorarensen, Agricultural College of Holar, Iceland, personal communication).
Fish are highly reliant on temperature (Boeuf & Le Bail, 1999), and the variation in sea temperature is considered to be the most important biophysical factor that influences salmon growth. Efficient salmon growth was previously believed to be best promoted at water
temperatures between 13 – 17 degrees Celsius (Wallace, 1993). However, recent studies show that growth is better achieved at colder temperatures.
Even at the highest temps previously noted for optimum growth and overall health, we are talking about water in the 50's F range. These are large powerful swimmers, that at mature sizes aren't going to do well in even 500-1,000 gallon tanks with chillers. They will stress out, and become sickly over time.
Who here can replicate their proper environment, in systems ranging in the thousands of gallons?
Please hold your hands up and take the challenge! lol
I get where Wes is coming from, this is his niche in the hobby, and again, kudos to him for seeking out the odd and unusual, but boys, let's not get carried away. I would really hate to see someone attempt to keep some of the fish listed (and there's more on the lists posted here) only to end up doing what a beginner often does, which is kill fish.