Ok, but don't they also nibble[轻咬]on their eggs? They do indeed. But here’s the interesting thing. The scientists observed that when there were female sand gobies[沙鰕虎鱼] around, the males spent less time nibbling and more time fanning[给...扇风] their eggs and working on their nests. Show off.
This was especially true for sand gobies with larger nests, maybe because bigger nests provide room for additional mating[交配]. And do the female sand gobies fall for these fatherly[父亲般的] types? That's the next question researcher's trying to answer.