There are many aspects to Koi husbandry that begin with simple feeding and pond maintenance and extend to having an intricate knowledge of the behaviour of your fish and the ability to identify any unusual behaviour patterns.

In any pastime there is no substitute for experience. However if you never undertook anything until you had experience nobody would ever undertake anything new. Whether or not you do have experience, one very important aspect to keeping Koi is to simply spend time watching them. Not only should this be a source of pleasure in itself but you will be learning, either consciously or subconsciously about the natural behaviour patterns of your fish.

It is exactly this understanding of normal behaviour that will be one of the greatest husbandry skills you can possess. Being able to identify changes in behaviour will give a good early indication of when your fish may be showing signs of distress. The ability to respond to such subtle clues before obvious signs of physical ailment can make treatments more straightforward and will almost certainly lead to more effective long term fish care.

With minimal exceptions, your Koi should be moving continuously. Prolonged periods of inactivity are always a good warning sign that something is possibly not right. A lack of appetite is another potential warning sign of issues. With both of these measures your assessment is based on what you instinctively understand as normal behaviour. Koi are generally a sociable fish and will typically exhibit more relaxed behaviour in a group environment. When isolated the fish will generally be more shy so this should always be understood when a fish is quarantined or isolated for treatment.

Seasonal changes will also impact the behaviour of your Koi and they will become more dormant towards the bottom of the pond as the temperature drops. This is perfectly normal and the reverse will happen as spring arrives and the temperature increases. This is always an important time to pay keen attention to your fish to ensure that they all return to normal levels of activity. If most are moving freely and feeding well, then the lack of this behaviour in another should be a prompt for action.

It is important that you possess the correct equipment to be able to catch, isolate and inspect individual fish when necessary and with minimal fuss. Despite this need to be able to identify and respond to developing situations and needs, the key to good husbandry is being able to maintain a healthy environment by working around the fish and maintaining good water quality.