1 Keeping animals in captivity can prevent their extinction. Zoos, aquariums, water parks, and other facilities can help to maintain the viability of endangered species when humanity does not do a good enough job of protecting the animals in the wild. One of the best examples of this advantage is the Przewalski's horse. Thesame question is relevant to keeping fish, or any animal for that matter. Many of us certainly do work to provide what the fish species require, but not everyone does this. Off cause if its a newbie then it can be cruel. A good example of something similar is the copper band butterfly so many experienced hobbyist have kept one a good Partof that may be guilt over how I handled a pair of rabbits that were forced on me at one point, though. as long as you give it a good setup and lots of enrichment, keeping a snake is not cruel at all. However, in my personal opinion, the way most snakes are kept IS cruel. Tiny boxes, no enrichment, bad. PeaceLily requires some nutrients to thrive. When you grow this plant in an aquarium, the plant takes nutrition through the water. The water contains nutrients made by fish poop and they clean the water for the fish. This way peace lilies help to reduce algae growth in the tank. Provide Shelter for Fish Thesestunning fish reach lengths of up to 15 inches, however in captivity they usually grow to around 12 inches. 1. Mandarinfish. These spectacular looking fish are the most beautiful in the ocean. It is native to the Pacific Ocean and lives in sheltered lagoons and inshore reefs. TheDangers of Flushing Fish. Aquarium owners and those who keep fish as pets are advised to never dump fish for any reason. This includes flushing them down a toilet. Nobody really knows if a fish is capable of feeling pain, and there are some who even believe it is cruel to dispose of fish in this way. The Dangers of Releasing Fish into Therising popularity of whale sharks has made them a sought-after attraction in aquariums, but is it cruel to keep such an enormous creature in captivity? Whale sharks are the largest fish species in the world, growing up to 18 meters long, and are migratory animals who can travel thousands of miles in one season. As such, the conditions of Inthe cruel pet trade, betta fish A diet consisting solely of plant roots may keep them alive for a while, but since it lacks the proper nutrients for this species, the fish eventually become sick and die. Setting up and maintaining a proper aquarium for any fish species is much more complex, expensive, and time-intensive than most 3 It depends on the aquarium size, the fish, and how uninsulated it is, and where in the UK. I easily keep fish in a couple aquariums in a garage room addition and several more in an unheated garden shed. However both are well insulated. Your brick have a lot of thermal inertia so (with doors and windows closed) , the temperatures in the Thebacteria will then remove ammonia from your aquarium, keeping your fish healthy. Step 3: Heating your tank. Without proper tools, heating your aquarium is going to be difficult and time-consuming - especially during winter! Those of you with woodstove heating will have less difficulty. The warm room temperature means the fish tank will ymbH.