/r/Aquaculture

Photograph via snooOG

A subreddit for all things related to the farming of fish, crustaceans, molluscs, aquatic plants, algae, and other aquatic organisms.

A digest of news, articles, and comments from the global aquaculture community.


More about Aquaculture:


Big news: "Scientists Create World's First Fish‑Free Prawn Food"

"...There is intense global interest in Novaq because it solves one of the farmed prawn industry's biggest problems - its reliance on wild fisheries as a core ingredient in prawn food.

But aquaculture has reached "peak fish", where demand for wild harvested fish meal now outstrips supply. Without a solution, soaring world demand cannot be met.

"It is absolutely a critical issue for the global aquaculture industry. There's no more room to get more wild harvest fish, so we've got to find alternatives," Dr Preston said.

"A justifiable criticism about aquaculture is the continuation of catching wild fish, grinding them up and feeding to farm fish."

News of Novaq's development has caused huge excitement around the world, as many thought a fish-free food was impossible..."


Also Check out /r/:

/r/Aquaculture

9,732 Subscribers

2

Staggering successions for Hybrid Striped Bass

Hey, I have multiple RAS systems going with 10ct 1000 gallon stock tanks in total to play around with.

How would you stagger successions of Hybrid Striped Bass to get the most efficient use of the 10 tanks? Add fingerlings to 2 tanks every month-6 weeks or maybe less frequently? Also what stocking rates would you suggest?

Harvest size of ~1.5lbs after 12 months from fingerling size from the literature I have read, I will be targeting the whole fish market with average fish weighing about this much.

0 Comments
2024/05/18
19:16 UTC

2

Re-cycling RAS system…bacteria startup cycling

I am going to drain and refill my 2ct 1000 gallon tank RAS system, cropping out this round of tilapia and starting hybrid striped bass for the next sucession. Plumbing changes and filtration upgrades are planned, pretty much restarting the entire system with modifications being made. How long should cycling the system take approximately before I can begin my next batch of fish?

Would the bead filter being used for filtration store enough bacteria to kickstart the process? Again I am going to dump all water from the stock tanks but thinking about keeping some in the bead filter to save bacteria, I dont want to buy any produces that supplement bacteria too expensive.

Please advise thanks

4 Comments
2024/05/18
19:02 UTC

2

Do salmon farms create an oily residue on the waters surface?

Hi guys, I'm interested in all things aquaculture and developing sustainable and profitable technologies to improve fish farming.

I understand that some types of fish farms leave a slick of oily residue on the waters surface. It is derived from the livestock and the feed which is made of oily fish like herring, and can pollute nearby areas.

I'd be interested to know if this is observed in salmon farming or if anyone had images showing this?

Thank you!

2 Comments
2024/05/18
16:57 UTC

1

My introduction towards conceptualizing my goldfish feed

Hello guys, I am making a concept idea to an ornamental feed I want to incorporate, based on the science and tradition in goldfish.

Since my first 10 years in aquarium hobby, I seek open minded knowledge, needing better fitness that my fish can enjoy rather than being fed from low grade cheap feeds. Cargill, EWOS, DSM, and Skretting inspired me to make a google document on a feed formulation I need to then create a brand based on scientific (study with aquaculture related studies, the biology, longevity, and their nutrition requirements) and traditional (breeding those animals for ornamental purpose towards color and body shape) aspects.

I value ingredients that supports intestinal function, muscle and cartilage growth, stress dampers, color enhancers, organ, bone, cartilage and scale health. The concept of phytogenics is new to us and especially using local plants like oregano, thyme, yucca, sage and others to improve our fish's life and wellbeing. It doesn't have to use too many additives or raw material in general if it were to be hydrolyzed, or if it contains these said dense components (iron, selenium, vitamin k, glutamine, butyrate etc.).

Customers should value affordability without compromisation on welfare of goldfish, internally and externally. This idea is when it comes to premium food, our minds viewed them as being too expensive for too little of quantity(more price from less). Eliminate the idea of cheap and low grade by using the idea of more from less (as with hydrolyzed proteins and vegetable extract versus bulk fishmeal and grounded greens) to get the consistent effect of quality equals quality.

What I really need is feedback and add ways including making the formulas environmentally friendly, is sustainable, innovative and optimal according to its species' dietary fulfillments.

Despite me not owning a farm, I enjoyed the aspects of aquaculture and ornamental breeding. So if anyone has ideas, or likes to tagalong with me, drop me in my profile and I'll be glad to respond.

6 Comments
2024/05/18
03:43 UTC

12

From science magazine

2 Comments
2024/05/15
21:13 UTC

4

Blue carbon

The fantastic soft power of good old networking and connecting to people on the field on a shrimp farm. Exploring the new paths, trends and metrics for carbon markets with our field team and friends from overseas. Let's do this ! @bluecarbon #bluecarbon #shrimpfarming #verdeaquabr @verdeaquabr #bluefarmingeconomy

0 Comments
2024/05/11
11:20 UTC

1

Inflatable pool with tilapia

I based in New England. It will be outside. What do you think of this idea?

3 Comments
2024/05/10
18:57 UTC

0

Hey guys, check out our Concept Video of Floating Resort and Aquaculture

0 Comments
2024/05/10
14:03 UTC

2

How does this work?

Hello! I am wondering what kind of education I need to get into aquaculture, I'm not sure what I wanna do, and honestly I don't think I want to be a manager unill i can save to have my own farm, I don't exactly know what collages offer, or if i need to go to community college, and how much they are, let alone how to get started, I've already gotten my high-school diploma, and I'm not the wealthiest person, im thinking of going for Feed Specialist or the Fish Health Specialist

Any help would be appreciated, I've always loved fish and the water, I kinda wanna go into salt water but I'm fine with fresh water

7 Comments
2024/05/08
20:35 UTC

69

How do y’all start the work day?

This is my first order of business every morning.

21 Comments
2024/05/07
17:11 UTC

1

PCR optimization

Hi i have a new question. Right now our main goal is to optimize PCR conditions for target host genes in our project. If that is the goal, is it okay to just extract DNA and not RNA? We dont need to check at this stage what genes are being expressed or not. We just need to optimize the PCR conditions we are setting for the samples we will run in the future. Does it make sense to extract host DNA for this part? TIA

4 Comments
2024/05/03
08:50 UTC

3

Crédito:FAO/Rabobank @shrimp #crevette @garnelen #camarão @scampi #gambas @camaron

0 Comments
2024/04/30
10:25 UTC

6

Energy Efficient Aeration Technology for Aquaculture

0 Comments
2024/04/30
06:10 UTC

3

Ultrasound Control Algae and Biofilm

Hi everyone. Has any of you tried in a production setting any ultrasound control algae and biofilm device like this one. I'm not promoting any device. I'm just curious about its effects on hydrophones, fishes, shrimps...

Thanks

1 Comment
2024/04/28
15:15 UTC

3

Indeed #GoScience #Produce more food using salt water ! #Shrimp #crevettes, #garnelen #camaron #scampi

0 Comments
2024/04/28
13:21 UTC

0

Micro algae small batch advice?

Hi, I’m trying to start a small batch phytoplankton/ micro algae culture at home that’s dense enough to use as feed. I’m looking for advice to get it started as quickly as possible. I’m using a 1 gal container and have added a 16 oz phytoplankton micro algae starter (saltwater based), and have a 1 ft grow light 24 hrs. I’ve also added f2 algae fertilizer and have put a aluminum foil wrap around it to try to maximize the light since my light source is a straight bar and I’m using a milk jug to cultivate it in. My goal is to feed a home aquarium and I’m looking to minimize cost. Is there anything else I could do to achieve maximum efficiency of reproduction/max density of the growth? Is there something I’m messing up? I do have a high output air pump going 24/7 and I’m leaving the light on 24 hrs. Any advice?

2 Comments
2024/04/27
04:01 UTC

4

shrimp aquaculture research inquiry on RNA vs DNA extraction

I'm looking at shrimp aquaculture research rn and have a question about why shrimp infection models use RNA extraction instead of DNA extraction.

Like for example, when a shrimp is infected with WSSV, RNA is extracted, and RT'ed into cDNA to look at if viral genes are present or not. Why is that? Why not just extract DNA? The virus will still use the host expression machinery to make DNA that will eventually turn into RNA into protein. Please help I really want to know why RNA is preferred over DNA in extraction.

4 Comments
2024/04/18
03:07 UTC

3

Concrete holding tank paint help

We run a fish farm here in california and my holding tanks paint/seal has worn away so it’s time for another coat but it’s been 20 years so I forgot what we used last time. It has constant water flowing through it when we have fish waiting to be sold in them. I’m currently drying them out to recoat them. The water doesn’t get stagnant in them, the seal is more so to protect our nets and the fishes skin from the rough concrete. Any tips on what I should use. It was a paint last time

2 Comments
2024/04/16
00:34 UTC

3

Seeking Advice: Upgrading Traceability Software for Trout Farming Business

Hey Reddit!

I operate a trout farming business here in Europe, utilizing the raceway (flow-through) method. As we continue to grow, the management of traceability for our fish has become increasingly crucial.

Currently, we're relying on a custom-made software that's showing its age and limitations. I believe it's time to transition to a more professional solution, preferably developed by experts in the field.

Do any of you have recommendations for traceability software tailored specifically for aquaculture businesses like ours?

Thanks

10 Comments
2024/04/15
08:44 UTC

2

Protecting baby geoducks

I have twice planted geoduck seeds on the shore of Hood Canal in Washington state in 4” pipe covered with 1” mesh over the top but each time little beach crabs have eaten them in their first day. I wonder if anyone here has had luck rearing geoducks in an environment with a lot of little crabs? I’m thinking about digging out the beach more and putting in sand for them before I install the pipes. That combined with mesh like what you’d use for a screen door, for at least the first year until they establish. Any wisdom for me?

8 Comments
2024/04/15
02:42 UTC

5

Working at a hatchery this summer

I got hired by my state’s game and fish department to be a technician at one of their trout hatcheries for the summer. I’ll be a full time employee living on site. I’m curious what the day to day life was like for any of you that have had a similar position. What was the housing like?

3 Comments
2024/04/15
02:36 UTC

1

Oyster farming Ireland

Used to work on an oyster farm, moved into a career couple years ago, hate being indoors and in front of a computer all day, had a genuine interest in oyster farming, anyone involved in Ireland with experience or knowledge of how difficult it would be to start one?

6 Comments
2024/04/14
12:52 UTC

6

USA Source for Jade Perch

Does anyone know where to source Jade Perch within the US? Or hatcheries that ship out of Australia?

I went to the PerchMan, however he isnt shipping to North America at the moment. Any other reputable sources?

Or…does anyone have alternate species suggestions besides Jade Perch, that can be sourced domestically/ with relative ease? Ideally, a heath tolerant (80F+) species with quick growth rates…not tilapia though our buyers want other varieties.

2 Comments
2024/04/11
21:12 UTC

10

Can I get a job in aquaculture with a computer science degree?

I have a degree in computer science and business. I almost went to school for aquaculture but alas I didn’t and I wish I did. Are there any jobs in the space I could apply for without going back to school? I’m looking into a career shift so I’d appreciate if there’s anyone working in data analytics related to aquaculture or similar I could dm and talk to.

20 Comments
2024/04/10
17:53 UTC

8

Evaluating shrimp tank performance and automation

0 Comments
2024/04/10
11:53 UTC

21

Aquicultura

Bora começar mais uma semana produtiva com bons resultados ! Vamos em frente ! #aquiculturaeficiênte @vamosproduzirmaisemelhor #fish @shrimp #camarão @aquiculturasustentável @VAB2024 @banc

20 Comments
2024/04/08
13:35 UTC

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