IX. Metabolism

MSD and the MSD Veterinary Manual

Feeding and Digestive Functions in Fishes
Fry and larvae require a more protein rich diet to maximize their adaptability and chances of survival. Request an e-inspection copy. You can make it easier for us to review and, hopefully, publish your contribution by keeping a few points in mind. Herbivorous fish require lots of fiber in their diet, while carnivores require food that is rich in protein. Feeding your fish vegetables - Fresh cooked high fibre vegetables benefit the digestive systems of many fish.

The digestive system

Understanding feeding and digestion in fish.

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Description Table of Contents. Food left in the aquarium after the first 10 minutes of feeding is not needed by the fish, and will collect in the aquarium as waste; decaying and releasing toxins.

Hyperactive fish and fast swimmers will get the first pick in the aquarium. Small fish can be scared away by larger fish and newly introduced fish may be too shy to get to the food. Feeding fish the same kind of food day after day tends to dry up their appetite.

Besides, they also need a variety of nutrients, which can be provided only by rotating the feed. Many fish species love worms, insect larvae etcetera and will stay much healthier when provided with live food. Care must however be taken to ensure that these food varieties do not carry infections, such as germs or other parasites, in them. This is very difficult to ascertain, unless you culture your own live food.

So beware when you feed live food to your fish. Food for the fish has to encompass a large number of nutrients. All these together make your fish healthy and able to adapt to changing conditions in the aquarium. Remember, the healthier the fish, the more resistance will they have to disease and infections.

Didn't find the info you were looking for? Register for free and ask your question in our Aquarium forum! Our knowledgeable staff usually responds to any question within 24 hours. Alternative fish Foods - Information about suitable fish foods you can buy in your grocery store.

Brine Shrimp Hatchery - How to make a simple plastic bottle brine shrimp hatchery, in pictures. Choosing food for and Feeding Fry - An introduction to feeding fry. Cultivation of some common live food - A guide about how you can cultivate some common types of live food in your home.

Culturing Microworms - An article on this useful live food for fry and small fish. Feeding fish - An article about feeding fish and which factors that stimulate fish to eat. Fish feeding habits - An introduction to the different feeding habits different types of fish have. Fish food — an introduction - A comprehensive discussion of fish foods.

Growing adult Brine shrimp - how to grow adult Brine shrimp Microworms - Microworms are easy to cultivate and are excellent live food for small fish or growing fry.

Raising and Growing Large Brine Shrimp - How to build a brine shrimp hatchery, and how to feed and grow the shrimps. Raising Daphnia - How to culture and use daphnia. Raising mealworms for animal food - Yellow mealworm larvae or adults serve as food for fish, reptiles, birds and other animals Raising Vinegar Eels - How to culture this easy and inexpensive live food.

Combined Worm Culture - Grindal worms and red worms can be cultured in one container together, thus providing live food for different sizes fish Tropical fish food - An introduction to fish food for beginners. Types of fish food - A guide to the basic types of fish food available.

Feeding your fish vegetables - Fresh cooked high fibre vegetables benefit the digestive systems of many fish. Protein and fish Protein is the single most important nutrient that the fish needs to grow. On a dry-weight basis, this makes up the maximum weight in their body structure.

Amino acids are derived from proteins and the fish uses them to make new body tissues as well as enzymes. Fish are very adept at converting food to body tissues. That is why fish need lesser amounts of food than do most other animals. Carbohydrates are almost non-existent in the food intake for many fish species, since energy is also derived from proteins. The quantity of protein required for the fish to be healthy depends on a number of variables like the species of fish, amount of natural food available, growth rate etc.

Fry and larvae require a more protein rich diet to maximize their adaptability and chances of survival. As the fish grow larger, their dependency on protein reduces.

The temperature of the water also affects protein requirements. Fatty acids and fish Fatty acids are a storehouse of energy for most fish. Carbohydrates can also do this job. It is also seen that some of the predatory fish species require some source of fish oil in their diet too. Fish that live within the confines of an aquarium are naturally prone to obesity. They do not use up their excess energy in swimming long distances or looking for food.

In most cases, excess fat can be damaging to the general health of the fish.

Protein and fish