FISH CULTURE

impact if looked after koi experience of lacking of gizi. Effect of which emerge if koi lacking of immeasurable gizi enough, depended from its element [of] him. Koi which lacking of vitamin of C show hollowing symptom [at] backbone, even [at] some natural case broken backbone. if happened lacking of iodine or mineral, koi will suffer goitre. Besides its [of] enough him, food have to [is] easy to digested, [is] easy to permeated by body, and contain pigment to add brightness of [his/its] colour. pregnant food-stuff [of] red pigment and turn yellow can be made [by] xself or obtained [by] [in] fish shops, especially selling koi. Even by genetis colour pigment [at] koi have is good enough, during its life there [is] possibility of natural koi [of] change because various factor influencing [it], like too solid algae population, sunshine focus, and water quality. For that, need pigment supply pass food to improve;repair colour balance of koi. Tables 4. Requirement Of Vitamin Basis For Koi. V

Prey [relation/link] - predator. Most [all] biologist assume that predator altogether species of carnivora, including fish eater of fish ( Piscivor) and eater all kinds of invertebrate start from king sized small fairish until. According to Campbell ( Weatherley and of Gill, 1984) there [is] 11 principle concerning [relation/link] prey and goose [at] fish: 1. Fish of Piscivor harvest the more fish from [at] fisherman 2. Mean prey size measure eaten by predator progressively growing larger by growing larger predator size measure 3. [All] predator show hobby [at] species prey [at] certain size measure 4. Predator generally take all kinds of prey 5. Preying prey by conducive predator [of] them change exploitation in density of prey. 6. Predator species possible change its food more or less permanently to species in is balance [of] ecology 7. Prey its amount [is] reduced clearly by predator pressure 8. Community prey composition influenced by predator 9. big population of prey can stimulat