Just got those new fishies molds in the mail today, so I poured up a test batch using pure white uncaffeinated, unscented soap. The blue mold with the smaller dead fishies passed just fine, no bleed or anything. The pink mold, with the larger skeleton fish, however...well, you be the judge.

I guess I've got some neat ice cube makers or something now. Kinda disappointed, I really wanted to make little dead fish soaps but that level of bleeding is unacceptable unless I only ever want to make pink soaps in that mold.