bitteraspects
Fish Herder
- Joined
- Jan 11, 2009
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I do hope you were joking, there's absolutely no reason to use fish for a cycle just to kill them when it's done.
Thats cruel,its bad enough having them in fish in cycle let alone flushing or freezing them to get rid of them!!
its no different then using white cloud minnows as feeders. or crickets/bloodworms/silversides/shrimp/krill/etc.
assuming youre not a hypocrite, and you dont use live or once live foods, but rather stick to prepared pellets, then good for you youre a step ahead of the game.
however, the OP has already made the conscious decision (educated i hope, and will assume for our purposes) to do a fish-in cycle, and hopefully understand the possibility of ill effects on the fish. keeping this in mind, any fish can be used, but preferably one that will both serve its purpose in the cycle, and will not be a big loss. oscars are nasty, messy, garbage fish (IMO. but to each their own i guess) and will easily create the necessary ammonia for the nitrogen cycle, and is hearty enough to withstand the harsh changes in water parameters that will occur during a fish in cycle. also, as i personally could care less about oscars being that they are extremely common, over bred, disgusting, disease prone, messy fish (again IMO), they hold no more value then a white cloud minnow (except that they are much more hearty)., i would suggest this as the fish to use.
feeder guppies are harvested and sold as food. and while 1-20 (depending on what youre feeding) are killed to sustain the life of a single fish, one single oscar used in a fish in cycle, can potentially sustain the life of hundreds of fish (or however many you put into the tank that the oscar cycled). same goes with the hundreds of brine shrimp used in a single feeding. or any other food that was once a living creature. was it "right" for them to be killed for this purpose? thats for you to decide.
at this point, the fish used in the cycle is no more then a tool for the job at hand. so unless you have never eaten a steak, or never worn a leather shoe, please dont preach to me about cruelty.
have a nice day