What Sets Our Hatchery Apart? Superior Broodstock Eggs are sourced from selectively bred redclaw for superior growth and disease resistance and hatched at ACH’s state-of-the-art hatchery facility. Biosecure Lab Water quality, health and disease management are carefully monitored and controlled onsite in a specialised, purpose built, customized biosecure laboratory. Antibiotics-free Craylings Australian Crayfish Hatchery (ACH) do not use antibiotics to treat eggs, making our craylings the safest and healthiest for human consumption Pathogen-Free Craylings ACH craylings are cultured in a pathogen-free, state-of-the-art hatchery facility—the first of its kind in the world Same age/size batches ACH craylings are supplied in batches of the same age/size, thus significantly reducing size variations at harvest. Batch-in, Batch-out' Stocking Method ACH supplies craylings in batches suitable for stocking individual ponds, thus eliminating many of the costs associated with current stocking methods.