Archive for the ‘Tech’ Category

Coloring Shrimp with Food?

Saturday, April 11th, 2009

Recently I wrote a blog post called Redder Red Cherry Shrimp . The post focused on what affects the coloring of Red Cherry Shrimp. There was a comment left on that post that included some information that I forgot to mention:

If you want a redder color, I have heard that it can depend on what they eat, to some extent. Wild caught salmon have the red colored meat because they eat crustaceans so a fun experiment might be to try feeding a crustacean based food.

The chemical that cases the wild salmon to have so much more color in them is Astaxanthin. Astaxanthin is naturally found in algae and crustaceans (among a few other things).

When a Dwarf Shrimp consumes a food that contains Astaxanthin (found in small amounts in shrimp based foods and in larger amounts in foods intended to deliver a large dose of Astaxanthin) color changes do happen. Red Cherry Shrimp that are not geneticly predisposed to display deep, dark reds will display a bit more color. Some shrimp, such as the yellow shrimp, may even display a totally different color, such as a blue green.

Once this food source is removed and the shrimp no longer eat Astaxanthin the changes will be reversed and the shrimp will revert back to its natural coloring.

I personally have done a few experiments with food heavy in this chemical. I used it with Red Cherry Shrimp, Yellow Shrimp and Crystal Red Shrimp. The results were quite variable, but the overall theme was a slight color change. The Red Cherry Shrimp seemed to get a bit darker, the yellow shrimp seemed to turn blue green, and they Crystal Red Shrimp seemed to have a bit more contrast.

There was no downside to the food that contained this chemical, and in fact it is known to be a great antioxidant. If you want to find a food high in Astaxanthin look for foods that their first ingredient is Krill or foods that advertise Astaxanthin as an ingredient.

R/O water. What is it?

Monday, February 23rd, 2009

In the Dwarf Shrimp world there is a lot of talk about R/O water, but what exactly is it?

Reverse Osmosis (R/O)
The movement of freshwater through a semipermeable membrane when pressure is applied to a solution on one side of it.

What this basically means is that a Reverse Osmosis filter removes anything that is in solution with the water such as calcium, iron, copper and salt among other things.

So why is this important to Dwarf Shrimp?

R/O water is often used for soft water shrimp. The reverse osmosis process makes hard water very soft and appealing to soft water shrimp. This process also removes harmful metals and other chemicals from the water.

Shrimp such as the Crystal Red Shrimp and Tiger Shrimp are both soft water shrimp and do better in R/O water than they do in hard water.

Is it required?

Simple answer is NO. R/O water, in most cases, is not required it can just be ideal for the Dwarf Shrimp that prefer soft water. In many aquariums the soft water shrimp will do just fine in tap water, and sometimes even thrive!

Simple Way to Net Dwarf Shrimp

Monday, February 16th, 2009

A question that I am asked often and see posted on forums often is “How do you catch Dwarf Shrimp?”

When attempting to catch Dwarf Shrimp, if not using a proven technique, it can be quite a pain because Dwarf Shrimp can be fast and quite agile. But using this simple technique it is very simple to catch a large amount of shrimp or even target a specific shrimp.

Step 1
Drop a piece of sinking shrimp food (such as Hikari Shrimp Cuisine) as close to the front glass as possible.

Step 2
Allow time for the shrimp to gather around the food

Step 3
Slowly insert net behind shrimp, putting the shrimp between the net and glass.

Step 4
Move net toward shrimp and scoop up as many as needed.

The shrimp will normally be distracted by the food and are usually easy to catch. I tend to scoop under the shrimp just on top of the substrate and it seems to work VERY well.

Good luck!

Iodine: Is supplementation needed for Dwarf Shrimp?

Saturday, May 31st, 2008

Iodine is an important part of a Dwarf Shrimps life cycle. It is needed to promote healthy molting and to encourage immune responses to injuries. It is obvious that any Dwarf Shrimp keeper would want their shrimp to have adequate amounts of iodine, but is supplementation needed?

A staple in the diets of most Dwarf Shrimp is algae, either in the naturally occurring form in the aquarium or as part of their diet provided by their keeper. Almost all algae have a high amount of iodine in their cells, and this iodine is readily accepted by Dwarf Shrimp and, in my experience, has been more than an adequate source.

I often read about new Dwarf Shrimp hobbies, and even some experienced ones, supplementing their Dwarf Shrimps iodine intake by putting liquid iodine into the water column. In my many years of researching this, I have never found any credible evidence that suggest that a Dwarf Shrimp can even use iodine found in the water column.

It is true that many marine invertebrates need a fair amount of iodine in their water, and they can use the iodine in the water column. I believe that the idea that marine inverts use iodine from the water has spurred on the belief that Dwarf Shrimp can as well.

Again, I have never seen any credible proof that Dwarf Shrimp can use iodine in the water column and I have plenty of evidence that it is not needed as a supplement. I have many aquariums with Dwarf Shrimp and I have never supplemented any type of iodine. My shrimp have always molted well and have always recovered well from any type of injury.

So what is my suggestion for the use of an iodine supplement?

I suggest avoiding supplementing any type of iodine in a Dwarf Shrimp aquarium. I have never seen any benefits to it and if the iodine is over dosed it can be harmful or deadly. If you are extremely concerned about your Dwarf Shrimps iodine intake (or lack there of), just make sure to feed a balanced diet that includes a high algae content.

The Softer Side of Breeding Neocaridina heteropoda

Friday, February 22nd, 2008

 

During the expansion of TheShrimpFarm.com’s hatchery one of the less popular shrimp, but arguably one of the most important to the hobby, was not getting the attention it deserved. The breeding population of Neocaridina heteropoda was placed in a bare bottom aquarium with plenty of filtration. They were fed normally and water changes were performed as per usual, but the breeding came to a near stand still over the last few months! Why?

The water that comes out of the tap in my area is very hard with and has a natural pH of 7.9-8.1. Nearly every aquarium that TheShrimpFarm.com uses to raise shrimp has a substrate of Aqua Soil Amazonia, which brings the water hardness down as well as the pH. In all of the Neocaridina aquariums that has Aqua Soil Amazonia as the substrate the pH is maintained at around 7.0-7.2.After realizing the Neocaridina heteropoda had stop breeding I decided to get an aquarium ready for them using Aqua Soil Amazonia. After the aquarium was cycled and had some plants added, I moved the  Neocaridina heteropoda over to the new set up.

5 days later the berried female was observed. This seems to suggest that while Neocaridina heteropoda can be very adaptable to most waters, extremes should still be avoided.

Helpful References

- Neocaridina heteropoda

- Growing Pains

- Cycling Aqua Soil Amazonia