I have 4 different types of fish in my 37 gallon tank including Bettas, tetras, mollies, and guppies along with 3 snails and 3 frogs. I monitor and inspect my tank daily and today I noticed a small jelly/snot like bubble in my pirate ship sail. I don't really see any eggs in it but I am just wondering what it could be and who left it and if i need to remove it. Any ideas would be greatly appreciated BTW my female bettas get along just fine. I have had some hit and misses with some but they got their own tanks.