Yes, GLOBEFISHES is a Scrabble word!

Letter values in Scrabble US: G 2, L 1, O 1, B 3, E 1, F 4, I 1, S 1, H 4, E 1, S 1.

Is it a valid word?

GLOBEFISHES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe; several species contain a potent nerve poison; closely related to spiny puffers

Not playable in Scrabble US: PUFFERFISH.