Having some trouble pinning these down due to lack of expert information. Hope somebody can help
No. 1 looks superficially like a Robust, Solenostomus cyanopterus but the caudal peduncle is far too long. Could it be S.armatus?
2,3 & 4 I have them down provisionally as S. leptosoma, Delicate Ghostpipefish
5 Maybe a Roughsnout given all the hairy projections
1 & 5 taken in Ambon, the others in Lembeh