One has to be careful about the type, amount and the timings at which the feed is to be provided to the fish in aquarium fish tank. The feed type depends upon the species and age. When you are purchasing the fish then you need to know the details about their feed requirements. Though there are no feeding timings in the wild but even then it is better to have a set schedule for feeding fish. There are certain fish that need to be fed twice or thrice a day so, make sure that you are punctual in following the schedule.
Now, considering the Feeding times; it is important to provide fish with the food at specific times such that they also get used to it and their biological clock gets adjusted accordingly.
Fish, usually, gather around the food when provided. This sight is very appealing and its fun to watch them but providing too much food might create problems. Fish do not consume the amount of food as is usually thought. They need to e provided with the amount that doesn