Hey now!! I absolutely LOVE my yo- yo's would not have any kind of loach but those! They do great with my cories and they all play together and trust me my plump little cories aren't starved and hold their own with the loaches! But def IMO
need at least 4-5 yo- yo's. I also have them in with neons,glofish rasboras and swordtails and I never see them act agressive to any of those!