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So while I think that the farms are partially to blame I also think that it is the responsibility of each of us as well. The farms and the breeders are supplying what we are asking, more attractive fish, different colour variations, new fin shapes, large fish. If you want more robust fish you...

Yeah, It sounds like they are not eating, maybe see if you can make some "smaller" food. Maybe try Colin's suggestion for feeding?

Where are you loosing them, before or after they begin feeding?

Looking good, how are the newer batches doing?

Also a good indicator that they have been feeding Looking forward to hearing the results :)

Just to clarify I meant these https://www.busybeetools.com/products/3-pc-steel-tube-brush-set.html Not the craft ones

Yeah so what you are talking about there is species which have adapted to very cold very stable environments. But most fish which dwell near the surface (using >500m as "surface") can tolerate some form of temperature shift. Several Antarctic species temperature ranges can cover 4 degrees (-2 to...

If you want you can get a little pipe cleaner which will fit inside and you can give it a little scrub. But 3 rinses with fresh water should be sufficient to get rid of anything.

Would the yolk sac run out quicker, I'm not sure, its possible that juveniles which are hatched require more energy, its possible early hatching means less developed there are so many factors that I couldn't say for certain.

Rotifers are small zooplankton. The most common species used as live feed is Brachionus plicatilis Here is an old review but covers the basics : https://www.researchgate.net/profile/Esther_Lubzens2/publication/225930989_Rotifer_as_food_in_aquaculture/links/0f31753722104c910f000000.pdf Just...

Maybe, the lower temp might help them it will certainly slow down the use of the yolk sac. It's hard, it's not great when they don't develop but at the same time there is very little you can do at that stage. All of the development up to the point of first feeding is controlled by the...

I'm curious where your objections lie? is it in the GM aspect?

I have had egg from them, but never got round to doing them. I have done quite a few other species like Angels, Discus, but when you do it for work its not the first thing you want to do at home

I have updated with the thesis title, if you copy that into Google scholar it should come out for you :) it's free to access too. It is possible that they don't require life food to start feeding, it really just depends on their life history. take the lumpfish for example it will just go...

I will preface by the way and say I have not (yet) bred Cory's and am drawing on experience with other species. So If I am saying stuff which doesn't apply to the species someone just shout up ( looking at you @NCaquatics ;) )

And each time you feed to Satiation? you could maybe increase the food a little if not If you are at 76 I think you might be at the lower end, looking at a few of the papers they seem to keep them between 24-26 so 75-78? you might get away with reducing the temperature but I don't think that...

So I may have missed this but what is your feeding regime like for the broodstock? Broodstock age is not usually a large factor in truly Asynchronous spawning species and you might get better results with increasing the females food intake. Did you manage to get the brine shrimp hatchery up...

Ohh just spotted this Dr of Science thesis from Ghent, Page 56 talks about juvenile morphology post hatch But it seems to be quite a interesting read :) Edit: URL didn't work so here is the title, should be able to search via google scholar " Early development of Corydoras aeneus (Siluriformes...

Yes and no, There is also a bottle neck at the point of absorption of the yolk sac and the start of first feeding in ballan wrasse only 40% make it past this stage. This is common in many other species as well such as Atlantic halibut at 20%. (both aquaculture values) in the wild this would be...

While I don't like how they look, I am not necessarily against them. Each to their own :) Often you get the non-natural argument, and I always wonder where the line is drawn? maybe you could elaborate @Fishmanic you used "natural unaltered fish" does this mean you don't like goldfish...

you can always 23+me (other genetic tests are available) the whole tank to see who are related :rofl:

So it is always a good idea to quarantine if you can. Just need a small spare tank which is not running all the time. A cycled sponge filter or equivalent and a heater. This small investment in extra equipment is worth the potentially loss of all your fish! All fish will have some potentially...

Depending on the spawning strategies of the fish, they will still undergo ovulation depending on various factors, eg photothermal cues, size, lighting regime ect. Some fish are able to keep their eggs within the gonad for a period of time after ovulation, eg in Salmon this can be a matter of...

Yeah I always look at them in awe when I have been in Maidenhead. They look beautiful! but I do wonder how practical they are and wonder if I would spend most of my time trying to bodge something to make it fit in with the aesthetic.

I on the other hand enjoy the archer (tv series) quote of " Who uses metric? Every single country on the planet apart from us, Liberia and Burma. Wow really? because you never really think of those countries having their S*** together"

So the issue comes in this day and age that many people just read something (usually a headline or the first paragraph) and assume. It took me quite a while to critically read through their methods, and the conclusions drawn from it, I probably did more than most would. But I worked through the...

I have really wanted to stay off this thread, TFF has been a great place for me not to think about the current situation, but I am disappointed at the lack of Science literacy going on here. So you are mis-interpreting this data set and the aim of the work. They are wanting to better...

If you want calming, try listening to Tidal Gardens, Than's voice is just very relaxing. I have him on when I am working on my tanks it counterbalances all my clattering around

Hi, So why are you wanting to move towards an external filter? While there are many merits of external filters, at they end of the day they can end up being big boxes of fish waste. Can you tell us a little bit more on your stocking, routine ect and we can help to see if a external filter...

It's ok, I had to figure it all out when I was doing mine. So if you have any questions just ask :)

Yeah Scripts is a good place to go. have a look around as different institutions specialise in certain areas. Well best thing to do is to try and work with people doing that sort of research at the institution you go to. So you should be able to find faculty and their specialities and research...

Yeah there is a few similar things available in the UK, Places such as Sparsholt but from my experience employers in Aquaculture don't tend to prefer one over the other.

So depends on what you want to do but there is a wide range of opportunities for a degree in marine biology. The most common one being aquaculture. But I have friends who did their MB degree with me and are now doing coral restoration in Aus, Marine mammal surveys, many work in Aquariums...

I mean I am sure there are some freshwater gamarids which could be possible and maybe some others in more tropical climes. But as AD says you'll probably get a high level of predation eliminating the population. The only really reason why it work in marine tanks is the large surface areas of...

You beat me too it!

Can you elaborate a little more on what you are thinking?

Ok, so what I would probably do it try and create a green water tank, where it is just full of algae in the water column. It's easy to do, take some tank water, maybe some sludge form the filter and get it either by a window or with a nice big light on it. You should be able to buy daphnia from...

So Refugium are common in marine tanks (as I am sure you know) and one of the reasons is a repository for copepods and other plankton and small invertsfor the main tank. As well as a whole host of other things. I always make sure to have one in my marine tanks, but never really considered one...

also what came from the 10 gal? into the new setup, if anything

I wonder if it is the gravel leaching something, maybe try keeping it out for the time being? I am leaning maybe towards fungi, still looks like the stuff you can get on some woods some times. Either way still annoying