I just bought my first pleco last week, a gold nugget, and we love her. My four-year-old named her Goldy. I'd love to try another pleco. We have a 20 gallon aquarium with 6 zebra danios, 7 neon tetras, 4 platies, and 2 dwarf gouramis. I change the water several times each month. We had albino cory ...