Pseudomugil sp.”Aru”

I hope all of you are having a great day!
I’m here to present another relatively new Rainbowfish of the Pseudomugilidae genus! It resembles a blue-eye from the grouping of P.gertrudae and P.paskai, and it goes by the name of Pseudomugil sp.”Aru”.

I would like to once again give photo credit to Hiroyuki Sasaki, a well-known photographer of smaller fish here in Japan, and the fish of which the photos are of, are from a shop by the name of “Tropical Garden”.

White-finned Aru Male

These beauties relatively recently have been making their way into the hobby via Indonesian distributors. They are at least claimed to be collected from the islands of Kepulauan Aru, which is a part of Irian Jaya, New Guinea. Which specific island of the Aru islands I have no knowledge of.


These may be a variety of gertrudae, that is still yet unknown, but it is a likely fact, being that the original P.gertrudae were collected from one of these very same “Aru” Islands, known as “Terangan” island. When it comes to localities of the same fish, Rainbowfish in general are known to vary greatly in terms of color, finnage, and patterns. Although there are usually some characteristics which are consistant throughout all the locality types. For example, in this case, if it were a P.gertrudae variety, it shares the black-spotting on the fins. Then again, so does P.paskai but that’s a whole other species of Pseudomugil. The Rainbowfish groups is quite a varied group of fish.

The most defining characteristics of P.”Aru” is that #1 the anal fin’s 3/4 rays are extended, creating a sickle shape. #2 is that all of the fins (with the exception of the pectoral fins) will either have a white-hue or an orange-hue on their edges. The pectoral fins of both the white and orange varieties exhibit a deep orange color at their tips. You can clearly see these differences in the 1st photo posted above of a white-finned male, and the photo below of an orange-finned male.

Orange-sickle male

The females, as with all Pseudomugils are quite drab compared to their male counterparts. The eyes are still blue, but the body has almost no color, finnage, or patterns, resembling the males.


I haven’t had any experience breeding/raising these, but from a friend of mine who has worked with them, they really pose no serious problems. Relatively easy to both keep/raise and breed. Of course with most Pseudomugils, they will do much better in groups and aren’t very aggressive, with the exception of the males sparring with each other.

I hope you enjoyed this post! Another on a relatively new and beautiful Pseudomugil!
If you like what you are seeing please feel free to leave a comment!
Have a good one!

Pseudomugil sp.”Timika”

Hello Hello!
I know it’s been quite awhile! I was on vacation back in my home state, but now that I am fully relaxed, here is another post! I haven’t done a fish post in quite some time, this one will definitely drop some jaws!

One of my favorite genus of fish is Pseudomugilidae, more commonly known as “Blue-eyes”, from the group of fish called “Rainbow Fish”. Most originate from Australia and surrounding island nations such as Papua New Guinea, or Irian Jaya. These are small fish, but they pack a punch in terms of color, pattern, and finnage! The specific one that I will be covering today is known right now as Pseudomugil sp.”Timika”. In all honesty I have not seen a blue eye this gorgeous in a looooong time!

Credit for all these photos go to Hiroyuki Sasaki, a well-known photographer of smaller fish here in Japan. The credit for the fish goes to the shop “Tropical Garden”.

Males sparring

These small fish (the ones in the photographs are just under an inch long) come from Irian Jaya, the Western neighbor to Papua New Guinea, on the island of New Guinea.

In terms of sexual dimorphism, the males are much more flamboyant than the females, as you can see from the picture below. The color and finnage are much more boring/drab compared to that of the males.
Female “Timika”

These Pseudomugils began being imported into Japan (at least) 1 year ago. I have no experience raising or breeding these fish, but I have heard that they are relatively easy to keep. They will do fine in pairs, but they do just as fine, if not are more comfortable when kept in groups. They aren’t overly aggressive towards one another, although the males will often spar, no “real” damage is done to one another.


I hope you all enjoyed this short write up on a new GORGEOUS Blue-eye, hopefully this genus of Rainbow Fish will become one of your new favorites!
My next post will most likely cover another Pseudomugil. I promise you its another eye-catcher!
If you enjoyed this or any of my previous posts please leave a comment!
Thank you very much for your time!