Koi have been bred/developed by the Japaneese to have colourfull, broad backs for viewing from on top as in a pond type situation. Koi grow very large and are not aquarium fish. If you really must have some kind of carp then get one of the fancy goldfish/shubunkin types.
The size of the koi will depend on many factors such as what type of koi it is, how much and what you feed it and the size of the aquarium or pond you keep it in.
No! because tropical fish live in heated water and koi in cold water.
no
Many aquarium specific and reptile/aquarium stores sell koi. Ask locally or do a search online to find a store near you.
No. Like any other fish, they will adjust their growth to the size of their pond, aquarium, or fishbowl. Hope this helps!
yes, depending on its size and the size of the other fish.
I feed mime freeze dried blood worms
Koi are a large growing fish (I've seen them at over 50cm long) and so they require a pond not an aquarium. They are also quite expensive. Koi are not for the beginner.
Angelfish Discus Koi Neon tetra Guppies Paradise fish Swordtails Gouramis Barbs Betta fish
It depends on what kind of fish, and the size of the aquarium.
Aquarium fish prices vary wildly depending on the type of fish. Typically however, most freswhater tropicals will be in the $2-8 range, and most marine fish are in the $20-50 range. However, there are many many exceptions to this, and aquarium fish can cost upwards of $2000 if they are rare and wild caught, or a new form of koi, etc. Some koi can sell for over $100000 USD per fish.
Koi are pond fish and grow to over 24 inches or so when adult. It is unlikely they will breed for you in a small aquarium. (It is also unlikely they will live long in a small (under 75 gallons) aquarium)