Are goldfish a mammal or a reptile?

Are mollies good for a 20 gallon tank? How many traditional monarchies are left in the world? Is salmon meat? Does a thermometer go inside or outside fish tank? What do reef fish eat? How do minnows adapt? What is the temperature megalodon lived in? How many eggs is a setting? Which of these fish is a member of the trout family? Is a craw fish an omnivore? How do you check the filter in a fresh water well? Is a piranha a consumer or producer? What is the differences from a goldfish and a feeder fish? How does a salmon live in fresh water when there young and migrate to seawater and die in fresh water? What is the adaptations of the fishhook cactus? Can you use a Brita filter to clean water for fish? Why do your female guppies fight? Are seahorses rare to find? You sprained your ankle 5 days ago will it be safe to wear high heels tomorrow night for a few hours baring in mind having a meal and then going out for a boogie? Where to sell guppies at Bangalore?