The best replacement for seahorses is barnacles.

The best alternatives to seahorses are rated as following:
★★★★★  barnacles

Your alternative for seahorses is not listed? Suggest!
Speaking about seahorses, one probably shouldn't forget about coral.

Other search terms related to seahorses and their ratings are:
★★★★★ coral
★★★ clownfish
★★ pipefish
★ clown fish
★ anemones
★ corals
You have in mind a companion for seahorses and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of seahorses in all years. Click on graph for more.
seahorses
barnacles