Search results

It is fairly easy to sex mature Macrobrachium shrimp. Here is a picture of an adult Red Claw male. Note the longer, and darkly colored claws. He has a hump on top of his tail, but the bottom is flat. This is an adult female. Her claws are much shorter, and are not as dark. Her tail has...

There are very few people that keep Macrobrachium shrimp. I am not sure what species you have. I am disinclined to label them M. tellenium or amazonicum. With juvenile shrimp, it is very difficult to do an accurate identification. Even so, you should be able to sex them. If you have...

.. ;) Watch the eggs for when they change color. You should be able to see the developing shrimp inside. Most noticeable are the eyes, which appear as tiny dark dots.

Melissa.

The simplest method to sex them is, males have a red spot on the outer half of their claws. In my experience, C. quadricarinatus are not as aggressive as P. alleni or P. clarkii. However, the best method for breeding them is the same. One tank for each adult, and a third as a nursery. Move...

It is a Cherax quadricarinatus, which is not a dwarf crayfish species, they can be aggressive. They are from Australia, where they're commonly called a 'Yabbie'. I used to breed them.

It's possible to pick up any crayfish safely. With a small one like yours, you need to be careful not to hurt it. Pin it down, and grasp it with just behind the claws. Nets can be problematic with crayfish. They're proficient climbers and have very powerful tails. The best pictures are...

First let's establish, as well as we can, the exact species of crayfish you listed. 1. I assume you mean the self cloning Marble Cray, Marmorkrebs or Procamarus marmorkrebs (the scientific name is under debate). 2. I don't have a clue. Are you meaning that there's a blue var. of Marmokrebs...

The watermark kind of gave it away ;) Sorry, I don't want to hijack your thread, so this will be my last tangent. Sounguru, I also used to breed P. alleni (blue and white), and C. quadricarinatus (red claw). I first became interested in crayfish when I was a child, catching them in streams...

The 20H isn't ideal for an adult non dwarf crayfish, they really benefit from the extra space provided by the 20L. Crayfish are benthic, meaning they live on the bottom of rivers, streams, and ponds... So, when considering the appropriate tank, they need plenty of room to walk. You will also...

I agree with Matt, add the air line after the powerhead. It'll boost oxygen throughout the tank, and more importantly it'll be quieter. The turbulence from air hitting the impeller will cause more vibrations due to cavitation and air bubbles. Also, if you plan on adding snails, you want to...

Looks like a young Procambarus alleni to me, they are very common in North America. They can become very aggressive towards any type of tank mate. I've had some that were ultra aggressive and others that never harmed anything. They do dig and destroy living plants. They also get very large...

Yep, good quality pictures are a must have for identification. In the meantime, it sounds like your crayfish may be wild caught (many feeder animals are not captive bred. If that is the case, you should quarantine it for at least a month. Wild caught crayfish have a much higher rate of...

Very true, and important.

Color theory is indeed what makes any colors look good. For instance, look at how Rembrandt uses dark shadows with a red accent. This is a simplification, Rembrandt was also a master of shadow, but the red fits. In essence, the dark surrounding red absorbs most of the visible light rays...

It's purely optical, but yes black works with RCS, or any shrimp that is not a dark blue, brown, purple, black, etc.. It is all based on color theory.

I agree with dixienut, If you have a second healthy tank, take a well used filter media from it and run it in your new tank for a few days. If available, you can also do the same thing by moving some substrate, or plants, to the new tank.

As far as I've read, there have been no published truly scientific studies concerning molting and supplements. Everything I've read on the subject is anecdotal. As for iodine, it's not needed at all. Total GH is important, but it varies from species to species, much like pH. The temperature...

With dwarf species, the mating ritual is multiple male shrimp chasing the female (swimming) around the tank. When you see that, you know that she'll be receptive to mating in ~2 hours. She will have to molt first, then the fastest/strongest/luckiest male will mate with her. Approximately ~10...

I also recommend a 10g tank. It can be much easier to start a 10g tank than a smaller one (more margin for error). You can use just about any type of filter, HOB, sponge, etc. The only precaution is to cover the intake so that juvenile shrimp are not sucked in. If noise is an issue, I would...