The best replacement for blue tang is yellow tang.

The best alternatives to blue tang are rated as following:
★★★★★  yellow tang
★★  blue hippo tang
★  purple tang
★  blue tang
★  powder blue tang
  regal tang

Your alternative for blue tang is not listed? Suggest!
Speaking about blue tang, one probably shouldn't forget about clown fish.

Other search terms related to blue tang and their ratings are:
★★★★★ clown fish
★★★★★ yellow tang
sailfin tang
You have in mind a companion for blue tang and it is not yet here? Propose!



Google Trends

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blue tang
yellow tang
blue hippo tang