Provide adequate nutrition and trace-element vitamins, and never overfeed.
Overfeeding is the biggest and most popular way to kill fish when you are a beginner. You often here people say "Oh, they`re hungry?" and "Oh, they`re still hungry?" and the next thing you know, your fish will start dying, because they are being overfed. Basically, what I am going to suggest to you is to follow these guidelines on how to feed your fish, with the key being that you watch the fish and monitor how they react.
Lets start with the 30-second rule. You basically feed the fish and watch all the fish come up and eat all the food, trying to make sure that every speck is eaten within 30 seconds. Then, over time (over a three-week period), continue watching the fish. If the average fish-not the fat one and not the skinny one (because there is always a fat one and there is always a skinny one)-starts putting on a bit of weight, then you are feeding too much. If the average fish starts sucking in around its tummy and looking thin, then you are not feeding enough. Most people feed too much. It is very, very rare for me to come across someone who doesn’t feed enough, it is usually feeding too much.
Everything has a three-week biological lag time. That means that what you do today will produce a result in three weeks. It`s like planting. You plant a seed and you expect to see a seedling in three weeks. You don’t plant a seed and go back the next day to find it. You wait three weeks for its biological lag time and that’s the case with the effects of feeding fish.
Everything takes time to show up. So, if you look at the fish and they start losing condition, you will need to feed them more. So, maybe it`s 45 seconds per feed. You`ve just got to alter it until you find a good balance for your actual fish. Most people find that giving the fish what they eat in 30 seconds, five times a week usually works.
Now, the next thing is the quality of food. Quality is everything. Now, it is quite interesting to learn that almost all fish specimen have the same requirements of nutrients (i.e. this much calcium, this much Vitamin A, this much Vitamin C, this much protein, this much whatever). There is a ratio of nutrients that fish require, and from one fish to the next, it is surprisingly similar. It is in how they process the food that makes the difference.
Fish evolved in their natural environment to be able to consume what is available. Moreover, fish evolved to be able to use nutrients which are available. So, if a fish comes from a fast-moving rapid, for example, and the only thing they eat is algae, it has probably evolved to eat algae. Another fish might come from an environment which is rich in insects and it is probably going to eat insects. The way that they process the food is what makes the difference, it`s not so much what they need. So you can actually feed a high-quality food such as New Life Spectrum to any type of fish. This food provides any fish with all the nutrients and vitamins that they need regardless of the species. This is without a doubt the best food in the world! It produces almost no organic waste and it is also a very, very clean food, which means it goes in one end and not much comes out the other end. That is absolutely wonderful in helping to keep your aquarium clean as long as you don’t overfeed it. If you feed low-quality foods (they might be very high in protein and lack most vitamins), the fish get the protein they need, but there is not much in the way of vitamins, so the rest just comes out and thus more waste is actually produced.
The quality of the food that you use will have a massive effect on the colour of the fish. Be careful not to use colour-enhancing foods high in hormones or foods too high in protein. Spectrum is the best natural colour enhancer on the market.