Can a Pink Tail and Sargassum Triggerfish co-exist in a 430 gallon tank. Footprint a little over 8 ft x 3 ft. Currently have a Sargassum that is around 3 inches. Looks like I can get a small Pink Tail (says 1 to 2 inches on website).
Yes they would be fine, I've never kept a sargassum but have kept male and female blue jaws with pink tails in smaller tanks. Sargassums are similar to blue jaws and in the same genus. I've seen them kept by others just fine. I have never seen a pink tail that small.