Arowana also "can obtain oxygen from air by sucking it into the swim bladder, which is lined with capillaries like lung tissue" http://en.wikipedia.org/wiki/Arowana
However I'm glad to hear that your the fry have survived as a feet like that is almost a miracle for a full grown fish never mind a fish still developing.
However I'm glad to hear that your the fry have survived as a feet like that is almost a miracle for a full grown fish never mind a fish still developing.