- There are various types of feed. For larger fish, small pellets are unacceptable due to their body size. Semi-moist diets are soft and compact. Many of these are expensive, but they tend to be of high quality diets and may be an excellent choice for some species
- Flakes have been used extensively for many years in the ornamental fish industry and have the advantage of being soft enough for very small fish to consume
- They also sink very slowly