Nothing is more thrilling and fulfilling than a flourishing colony of lovely shrimp that you have nurtured yourself. Although it can seem like a difficult task to take on, I can assure you that if you follow my simple advice, your shrimp will be eager to reproduce for you. You might even find yourself with more shrimp than you anticipated before you know it.
Of course, shrimp need to have their fundamental needs satisfied in order to thrive. Although there are some useful suggestions you may use to improve your shrimp’s chances of reproducing.
Size of the shrimp tank
Everything is based on the initial goals. The ideal size for shrimp breeding can range between 30 and 40 gallons. Choose 20 Longs if there isn’t enough room for such a large tank. Since shrimp have a larger surface area than fish that are 20 high, a 20 Long tank is preferable for them. The last one is excellent for fish because it has higher water volume. It is preferable to have the actual surface when it comes to shrimp.
If all you want to do is keep shrimp, a 10-gallon tank will suffice.
Shrimp density is also constrained by tank size. It is preferable to have 1-3 shrimp per liter of water if you want them to feel at ease (5-10 per gallon). As you can see, it is possible to keep at least 50 shrimp in a 10-gallon tank. It’s a lot, that!
The process of breeding freshwater shrimp
Let’s talk about how freshwater shrimp reproduce. The moment a saddled female molts, breeding begins. She will emit pheromones that will send the guys on a mad dash to find the berried female (s). At this point, every male in the tank is furiously circling it in pursuit of the female. The female will subsequently be located by a lucky male, who will mate with her. The fertilized eggs will then be moved to the bottom of her tummy after fertilization has taken place. Then, for the next two to three weeks, she will carry the eggs until they hatch. One of our berry Orange Pumpkin Shrimp is depicted in the picture below.
Jumbo freshwater shrimp farming
Start with a breeding colony while breeding Freshwater Prawn, also known as Jumbo Freshwater Shrimp or Macrobrachium Rosenbergii. Four females and one male, each carefully chosen healthy, sexually mature, and fertile prawns, make up a good-sized breeding colony. Prawns that are capable of reproducing ought to be vibrant, energetic, and healthy. Starting with a mature breeding colony can enable you to achieve your goals with a quicker return on your investment and save you six to twelve months of growth time, whether you are interested in producing prawns for personal use or for profit.
Since freshwater shrimp are tropical creatures, they need warm water to survive. A pond that has been properly designed, built, and managed will yield a reliable harvest of 1,000 to 1,200 pounds of huge, extremely valuable 10 count/pound whole shrimp per acre.
You must take extra care to maintain a temperature and water quality in tanks that are conducive to reproduction. It’s crucial to keep the water between 78 and 84 degrees Fahrenheit. Maintain the lowest feasible levels of ammonia (2.0 ppm), nitrite (0.05), and nitrate (40 ppm). Additionally, maintain a pH between 7.0 and 8.5 and total water hardness between 40 and 250 parts per million.
Egg-bearing adult female freshwater prawns are referred to as “berried” females. They are carried under the tail and are readily visible. Several days prior to hatching, the eggs’ hue changes from brilliant orange to brown as they mature. In order to prevent egg loss, temperatures must be kept above 77 degrees Fahrenheit. Prawn eggs hatch into free-swimming larvae in brackish water. Prawn culture requires a salinity range of 18 to 24 ppt.
Additionally, you might want to include prawn housing in your aquaculture or aquaponics system. Housing for prawns doesn’t have to be expensive; you can actually create it yourself. The rectangular PVC pipe box that houses the prawns in this image has horizontal layers of plastic bird netting (.25 mesh, 2″ – 3″ between layers).
Last but not least, be sure to accurately calculate your stocking densities:
- 45 days after larval stage: 40 animals per square foot.
- 60 days after larval stage: 20 animals per square foot.
- No more than two animals per square foot from day 60 to day 90.
- One to two and a half square feet per animal after day 90.
A prawn’s method of reproduction
The female of prawns must have a soft shell before mating (newly moulted). A spermatophore (sperm capsule) is inserted into the female by the male. It stays inside the female reproductive organ until the prawn is ready to spawn, at which point it fertilizes the eggs.
Prawns are fed with what?
There is little information available regarding the nutritional needs of young prawns and broodstock. However, compared to the needs of broodstock, there is now comparatively more knowledge accessible regarding the requirements of juveniles.
Many research point to the storage and use of lipids for P. monodon broodstock maturation and spawning. At the beginning of maturation (Stage II), ovarian lipid increases more than twice as much as it does at full maturity (Stage IV).
Prawn juveniles require 20–25% carbs, 40–45% protein, and 5–10% fat. In order to grow and survive, a protein-energy ratio of 120 mg prot/Kcal is required. Both of the prawn’s developmental stages depend heavily on the quality of the protein and fat. There are eleven amino acids that are necessary, but there are no set amounts. Arachidonic, docosapentaenoic, and eicosahexaenoic acids are examples of essential fatty acids whose amounts have not yet been established. Lecithin and cholesterol are also essential.
The preliminary findings of a 35-day feeding experiment revealed that a semipurified diet devoid of vitamins, choline, and inositol greatly inhibited growth, whereas niacin and pyridoxine-free diets promoted growth comparable to that of a diet including all the vitamins. P. monodon’s mineral requirements have not been investigated.
In prawn grow out and broodstock diets, good sources of nutrition include fish meal, shrimp head meal, shrimp meal, mussel meat, Acetes sp. or “alamang,” soybean meal, squid meal, earthworm meal, and annelids. Additionally, different ratios of cod liver oil, fish liver oil, soybean oil, and beef tallow have been used as sources of several essential fatty acids in the formulation of practical diets. Although there are sensible diets that can be advised, these diets will continue to be improved as new nutrient requirements are identified.
F. Piedad-Pascual (1989). Nutrition, feed development, and feeding methods for broodstock and grow-out shrimp. Fish and Crustacean Feeds and Nutrition, edited by D. L. de Guzman, L. C. Darvin, and R. D. Fortes. Proceedings of the Seminar Workshop on Fish and Crustacean Feeds and Nutrition, held at the University of the Philippines in the Visayas (UPV) in Iloilo City on February 25 and 26, 1985 (pp. 24-29).
How do you begin a farm for prawns?
Prior to stocking, PL from hatcheries should be frequently inspected, preferably under a microscope. After stocking, shrimp health should also be checked once a week. This helps keep shrimp growth at its best and look for potential illness symptoms. It’s important to determine whether:
- The shrimp are vigorously swimming.
- They have a typical morphology.
- Their stomachs are filled.
- No organisms are attached to them.
- The muscle is clear; there is no cloudiness.
- The ratio of muscle to intestinal width is 3:1.
- Large and black hepatopancreases are present.
- The gill is gray or white.
- There isn’t any melanin (shown by black to brownish spots)
- The shrimp heads don’t have any moulting debris on them.
- Their bodies are uncut and untwisted.
How much time does a prawn need to grow?
One-third of the prawns produced globally are produced by prawn aquaculture, which is one of the fastest growing types of aquaculture. China, Thailand, Vietnam, Indonesia, and India are the top manufacturers.
Penaeus vanname and Penaeus monodon are the two most widely farmed prawn species worldwide; however, Vannamei prawns are not farmed in Australia.
Prawns are raised in saltwater ponds and fed a pellet diet that includes soy beans, fish meal, and fish oil. Improvements in feed utilization and a decrease in the amount of fish meal and fish oil in the prawns’ diet are the results of ongoing research into shrimp nutrition and genetic selection. When compared to chickens, pigs, cows, and lamb, prawns are a particularly efficient animal to raise because they use their feed more effectively, converting more of it into body mass.
A prawn typically needs four to six months to reach harvestable size; it can then be caught in traps or by draining the pond. The ideal scenario is when, as is typical in Australia, the prawns are processed within an hour of being harvested.
Prawns, can they grow in freshwater?
The tropical regions are where this type of civilization is most prevalent. Freshwater prawns are raised in small earthen or concrete ponds (up to 0.2 ha) under intensive culture, where they are stocked at a density of more than 20 per square foot and produce more than 5,000 kg per ha per year.
How can you promote shrimp reproduction?
We now arrive at shrimp hiding places. Having various hiding places for shrimp in your tank is useful, especially if you intend to keep fish there. Even in a tank with only shrimp, they will appreciate having places to hide from light, after molting, and other stressors. There are numerous alternatives available, and you can select from various categories.
Shrimp-Specific Hides: Created hiding places like coconut caves, cubes, or shrimp tunnels constructed of driftwood.
Maintaining a mix of hardscape and plants in your shrimp tank can offer a number of hiding places and increase the surface area available for the growth of biofilm.
Rocks & Stones: The Dragon Stone, also known as Ohko Stone, is my particular favorite stone for aquascaping and acting as a shelter. Since it is an inert stone, it is ideal for maintaining stable water conditions. Additionally, it features natural nooks and crannies that are ideal for putting moss or other aquatic plants inside of, or for shrimp to burrow into. Lava Rocks are ideal for shrimp aquariums as well. They are quite adaptable. You can use them to create your own caverns or designs because they are lightweight enough. Additionally, they are naturally porous, which makes them ideal for preserving healthy microorganisms. Both of these choices are easy to break into smaller pieces due to their consistency, allowing you to add additional stones to your aquascape.
Wood: Driftwood is ideal for hardscaping for a variety of reasons. It exudes tannins that mimic the environment in which shrimp are found naturally. Shrimp also enjoy nibbling on the films that develop on it.
Due to its tubular shape and perforations, cholla wood is frequently seen in shrimp tanks where it makes the ideal hiding place for shrimp.
Wood, stones, and pebbles can also be fantastic anchors to tie or glue moss and other plants on to. Even ready-made ornamental items are available for purchase.
Aquatic plants and moss are both crucial components of a shrimp rearing environment. Shrimp enjoy hiding and feeding in them, in addition to the fact that they aid in filtration of ammonia and nitrate. Floating plants offer shelter from harsh light and are excellent at absorbing hazardous substances. My shrimp are frequently seen chewing on the roots of floating plants while hanging at the tank’s surface. Their lengthy roots frequently become covered in germs and food powder.
Similar to this, shrimp like to rummage through and eat from moss. Moss is incredibly forgiving and just needs a tiny amount of light and nutrients to flourish. Anubias, Bucephalandra, and Ferns are all common plants in shrimp tanks. These low-maintenance plants can be fastened to wood and other shrimp hiding places or tucked into crevices in hardscapes like rocks. They appear in a variety of sizes, and the algae and biofilm that can build on their leaves are delicious to shrimp. Actually, any kind of plant will help your shrimp breeding efforts.