The reason that we offer superworms to our fish during the larval stage is that the worms are much softer at this point and far easier to eat.

At this point of their development, they take on a more white appearance, before turning darker until they become black. Over the course of their larval stage, they are known to molt several times and eventually, they will emerge into their pupal stage. In the wild, the superworm will typically feed on decaying or dead plants. If you don’t then there is a very real risk that the superworms will turn on one another and engage in cannibalism. This isn’t such a huge problem but it does mean that they may have a bigger appetite so you must keep up with this when rearing them. You will, however, find that when they are kept in bigger groups, it takes longer for them to grow. If you’re going to use them as food for your fish then it is vital that they are given a sufficient diet and kept well watered. Not only super by name but also by nature, these worms can grow as large as 50mm when they are fully mature.

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