UMT MOOC: Ornamental Fish Culture - Topic 7: Seed Production - Degree of Care - Siphon and Larvae Removal

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Depending on your spawn size, if you have a large spawn and your breeding tank is small, we will need to transfer fries to a larger growing tank. Removal of these fishes is not as straightforward as extra care is needed to move these fishes over. The most important rule that we need to follow is to transfer by scooping. First, we need to take some water from the breeding tank into a new temporary container. Next, we scoping these fries (see video below for Betta sp.) together with water into the new container. Do not remove these fries by scope net or move out of water. Fries are not strong enough and may succumb to sickness due to stress and changes of water temperature. Then, we move this temporary container into our new growth tank and acclimate it before release these fries into a new tank. This migration should be done either in early morning or late evening where the weather is colder.

Alternatively, these is another method where we simply siphon fries out of the breeding tank to grow up tank. While this way is faster, extra care needs to be taken to make sure these fries are mature and strong enough to be transferred as shown in another video below for Cichlid fries.

We have tried both ways and manually scooped by a Betta scoop is way safer as fry will not stuck in the conventional net and also prevent tears to its fragile fins.

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