This is a discussion on what do you guys think about spawning mops. within the Livebearers forums, part of the Freshwater and Tropical Fish category; -->
What do you guys think about spawning mops I'm thinking about making some
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I learned from a member on here about them. I used a dark green acrylic yarn and hang it in the corner of my tank just sitting at surface level. They use it more there than if it's dropped lower down into the tank. Be careful that any string doesn't hang out and down the side of your tank as it will act like a siphon and drip, drip, drip. I use the glass lid to catch one of the yarns but make sure that it sits up on top of the tank for that reason. The pieces are about 16-18 inches long and so the mop is about 8-9" in length.
I spawn Boesmani Rainbowfish. I do get eggs regularly but other fish in the tank will come and steal them so I've had no fry. The RBF let them, they don't guard them.
I raise a lot of livebearers and yes they work well if properly designed. You can put the strands around a wine cork or cut the center out of a plastic lid, I use coffee container lis and tie strands around the circle. Fry can dart inside through the strands and hide. You can also poke holes in the lid and put strands throuh with knots on the outside end. Just don't toss a mop in with no floatation as it will get a lot of waste in it.
Yup, just like that. I have a lot of fish coming & going, so I have plenty of sheets of styrofoam. I use pieces of that the same as cork, they work well in a livebearer setup. Mops are a staple for cory breeders, many species such as pandas are mop spawners.