The feeding function is primarily about providing proper nutrition to fish, and one of the key aspects is enhancing their color. For example, if you want your fish to turn red, it largely depends on whether the fish has the genetic makeup that allows it to absorb and display red pigments. Most commercial feeds contain high levels of astaxanthin, a natural pigment often derived from shrimp or algae. When fish consume these feeds, especially those with red meat content, their livers process and excrete excess astaxanthin onto their scales, gradually making them appear redder over time.
However, this effect only works if the fish actually have the genetic potential for red pigmentation. If your fish lack the specific genes—like in red gold or orange varieties—the astaxanthin won’t make a noticeable difference. Fish scales can't absorb or change color through other pigments; they must rely on their own genetic expression to show vivid colors. It's important to note that not all brands are equal. Some may claim to be the best, but in reality, the effectiveness of the feed depends on both the quality of ingredients (natural vs. synthetic astaxanthin) and the genetic traits of the fish.
Similarly, when it comes to food-based feeds, the fish must also have the right genetic predisposition. The basic formula usually includes high-protein content, which can lead to increased cholesterol buildup in the body. This often results in a more prominent head, which is a desired trait in some breeds. However, such changes don’t happen overnight. It typically takes at least 30 to 60 days for visible effects. If a product claims to work in just 3–7 days, it’s likely misleading. The body needs time to metabolize and reflect changes in appearance.
In reality, very few fish naturally exhibit strong head development and vibrant coloration. It’s estimated that only about 1 in 1000 or fewer possess these traits. Fish traders often promise "guaranteed head and color," but buyers should be cautious. Many fish sold in stores look bright and colorful due to artificial coloring, not natural pigmentation.
To support healthy growth and color development, several factors should be considered:
1. **Circulating water** – Ensures waste is removed efficiently, maintaining clean and healthy conditions.
2. **Proper feeding amount** – Too much leads to water pollution, while too little causes stress. Feeding should be just enough so the fish eat without leftovers.
3. **Use coral sand as a filter** – Coral sand is rich in calcium and helps raise the pH level of the water, preventing it from becoming acidic and deteriorating.
4. **Increase lighting** – Adequate light exposure enhances color vibrancy and supports overall health.
Daily exposure to proper lighting helps maintain and even improve the fish’s color. As for the feed itself, the importance of using high-quality, astaxanthin-rich formulas has already been discussed.
In my personal opinion, a good-looking fish should have a short mouth, a wide body, and clear, distinct coloration. Even if the head isn’t overly large, a well-proportioned body and vibrant color can make a big difference in appearance. These characteristics often indicate a healthy and genetically sound fish.
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