Prawn larvae are produced in hatcheries, which use wild-caught spawners or broodstock collected mainly from the coastal waters between Cooktown and Innisfail.
The majority of these spawners are gonadally mature and when they are transferred to the hatchery they either spawn spontaneously or are induced through the use of eyestalk ablation.
Each spawner will produce between 200,000 and 500,000 eggs. The eggs are hatched and pass through a number of larval stages until they reach the post-larvae stage. The post-larvae are normally sold to the growout farms for stocking ponds when they are 15-20 days old. The quality of the post-larvae will vary between spawners and the time of the year the spawners are collected.
Poor smolt quality used to account for about 40 percent of the mortality in Norwegian salmon production. That is changing, as SuperSmolt FeedOnly is fast becoming the preferred method of smoltification. 74 million smolt where produced in Norway using SuperSmolt FeedOnly in 2017. In fact, use of the method has increased steeply every year since 2013, when the technology was used on less than 10 million smolt in No
Many have asked, “hey Dexter, what did you feed your fish with?” Heres a secret revealed to growing fish faster . A balanced diet for your aquarium fish is essential to their survival. Most of the commercially available dry fish foods are almost always unbalanced. In many cases, the vitamin content will gradually decline at room temperature and since majority of the commonly used dry food for tropical fish will only be kept for about three months, it is always advisable
Hi there fish keepers around the globe! Have you been searching the internet lately for some tips of successful fish farming and fish breeding? Oh yes! New ideas are just within our reach today. Todays blog offers all our readers more than just an idea. Everything I shared with you guys are all based from my personal experiences and have been proven true for me. So, for all of you who are interested with new but proven-true ideas, read on. Since I will be transferring the fishes
“If you have any problems on your ranch at all with cedar encroachment, then fire necessarily has to be a part of your operation. It is the best management practice. Any other way to deal with red cedar is only short-term effective.” That’s the conclusion of David Engle, Regents Professor Emeritus of Oklahoma State University, as well of many ranchers who have seen the benefits of fire to their own operations. Ranchers who turn to prescribed fire do it because it’s a goo