One can find information on Koi ponds from a variety of locations both online and in stores. Some places include Laguna Koi, Koi Fish Ponds, HGTV, and Premier Nursery.
If they are bullfrog tadpoles, usually yes
Guppies are tiny tropical fish. Koi are very large cold water fish. You don't mention what species of catfish you mean, and there are hundreds. But simply from what I've pointed out you can see that they are incompatible. Only an idiot would try to do it.
koi fish are importent to Japan as we all know! But why? In Japanese Culture the Koi Fish or Carp Is Thought to Be One of the Most Vital Fishes. This Is Because It Is Always Going From One Place to the Next and Dosent Stop Swimming, Often Moving the Water. Some States Are Trying to Minimize the Koi Population
Koi, Japanese goldfish from the carp family, mate like most other fish. The female Koi lays thousands of eggs which are then fertilized by one or more males.
You don't. You put it in a pond. Koi grow to over 24". To keep one in a bowl would be terribly CRUEL!
If the Koi is large enough it may well eat a goldfish fry but Goldfish and Koi are not fighting type fish so they do not normally bite one another.
One can find Koi Fish tattoo designs from the following sources: Ask, tattoo Easily, Google Images, Unique Tattoo ideas, YouTube, Create My Tattoo, Search Body Art.
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.
Koi has several meanings. One refers to the type of fish, which written in Japanese is: 鯉 The other refers to "love," which is written: 恋
The fish you are refering to as a "Japanese fighting fish" does not exist. There are no fighting fish that come from Japan. Japan is a cold country not a tropical one. The Koi Carp were developed in Japan. The fish I THINK you mean is the "Siamese fighting fish" more correctly the "Betta splendens". Yes they do fight but only the males fight and they will only fight against another male of the same species.
One way to determine the sex of a koi fish is by looking at their breeding tubercles, small raised spots on the head and pectoral fins that are more prominent in males. Additionally, male koi tend to have more slender bodies and narrower ventral areas than females. Finally, during breeding season, males may exhibit more aggressive behavior.