Okay so first of all I am new to this forum and betta fish. I have one male halfmoon betta fish named Armani. He is almost completely black with a little blueish purple on his back and throat area. He lives in a 2.5 gallon acrylic tank with a filter,light,natural aquarium gravel,one live plant,four fake plants and a rock thingy with a hole he can swim through. I have had him for a little over week. I was thinking about getting a small snail to put in his tank to keep it extra clean. I know betta fish (especially males) can be agressive towards other fish but would they be agressive towards a snail since it's not another fish?