Goldfish that have constant visual contact with humans also stop considering them to be a threat. After being kept in a tank for several weeks, sometimes months, it becomes possible to feed a goldfish by hand without it shying away.
Since goldfish are poor tank mates for other fish, a mystery snail might be right.Goldfish and mystery snails have similar water requirements which means that the conditions can be mutually established to keep both these species together.
10 Gallon Glass Fish Tank, Nano Aquarium Fish Tank, Rimless Low Iron Aquarium for Betta/Turtle/Goldfish/Snails/Shrimp and Aquatic Planting.
Mystery Snails enjoy community tanks and can absolutely live with most goldfish. Though it has to be said, they get along best with slow-moving goldfish varieties. Fancy goldfish have poor eyesight and swim slowly. Theyre not going to go racing towards your Mystery Snail and frighten them.

Snail Dietary Requirements. Goldfish Feeding Schedule. Preventing Food Competition. Tank Size and Space Requirements.
Goldfish vary in size depending on their living conditions. They tend to grow up to 1 inch (2.5 cm) to 2 inches (5.1 cm) long in a small tank. However, goldfish may grow large and reach up to 6 inches (15 cm) when kept in big aquariums.
Ramshorn snails are actually quite beneficial for goldfish tanks. These little creatures help to keep the tank clean by eating algae and other detritus. They also provide an important source of food for fish, shrimp, and crabs.

As we can see from the illustration, Goldfish And Snail Tank Size Requirements has many fascinating aspects to explore.
6. How many assassin snails should I add to my goldfish tank?8. What size tank is needed for goldfish and assassin snails?9. Do goldfish and assassin snails have similar water parameter requirements?
About this item. Frameless: 3 gallon glass fish tank is frameless, providing a super clear view. EASY MAINTENANCE: The size of the fish tank is 31*15*25CM, which is easier to clean and maintain than the lift-top fish tank.