These small 1.5mm semi floating pellets are designed so that most of the pellets will remain on the aquarium water surface whilst a small number of pellets will slowing sink through the water column. After a few minutes the remaining pellets will commence slowing sinking. Ideal and perfectly formulated for all goldfish including fancy types such as Orandas, Ryukins and Lionheads. Professional Formulas DEVELOPED ON AN AWARD-WINNING TROPICAL FISH FARM. Forty-five years ago there were no premium tropical fish foods, so the owners of the Florida based fish farm had to develop one. It took a lot of this and little of that before they got it right. Made in USA NOT EASY TO KEEP IT AMERICAN From the very beginning Xtreme decided to source all the ingredients, packaging and labelling from American companies. They have kept that promise. Why Feed Xtreme? Xtreme developed a catalog of products to feed all kinds of fish in all kinds of environments. They had to because 45 years ago there was nothing to feed the farm of 500,000 ornamental tropical fish. 10-years-ago we started feeding fish we did not farm; guppies, egg layers, livebearers and other community fish found in fish keeper's tanks. Marine fish can be finicky eaters too, but we discovered that great proteins like Shrimp, Krill and Squid found in all our formulas were perfect for them as well. Everything begins at the farm, real-life testing, trial and error formulations combine with suggestions from our retailers. Last but not least; fish gotta love it...and they do...which says it all.