Category Archives: Mudskipper Paludarium

Mudskipper paludarium reborn!

The hardscape curing.


Mudskipper Paludarium Maturing

Mudsie1 Mudsie2 Mudsie3 Mudsie5 Mudsie6 Mudsie7 Mudsie8 Mudsie9 Mudsie10 Mudsie11 Mudsie12

Hypseleotris compressa

Got a half-decent shot of one.


There’s two male H. compressas in the mudsie tank. I like them a lot.

Mudskipper Paludarium

My interest in these odd fish started a few decades ago. When I got an opportunity to acquire a few specimens, I went for it.

The three fish I got were listed as “Periphthalmus sp.“. After some research I identified them as Periophthalmodon septemradiatus, all three being males. Later I was able to spot a female.

Pretty soon I found out they are quite territorial and need a lot of horizontal space to be able to coexist in a tank. I decided not to go for a traditional style in mudskipper tanks, which is just aslopind sand scape, dry on one end and shallow pool on the other. What I wanted to create was a multi-pool system with water circulation, arranged in a way to enable many options for the fish to establish territories for themselves.

I had a 525 liter (140 gal) tank that I had used as a huge sump for a brackish tank.

After removing the sump baffles I decided to replace the front glass to a scratchless one. I also cut a piece off top of one of the ends to get a place for ventilation if needed when controlling the climate. I then painted the frames and the stand and glued the tank back together.


After tank rebuild it was on to the hardscape. I wanted to have a rootsystem that forms little puddles, with an inbuilt plumbing system.

The materials used were:

-polystyrene sheets

-polyurethane foam

-pvc pipe

-stainless steel wire

-hot glue

-tiling plaster


-acrylic polymer

And here’s how it was built:


And then, finally, a testrun after gluing in the scape: 


The fish I ordered were listed as Periophthalmus sp. They turned out to be Periophthalmodon septemradiatus.

P. septemradiatus is a great mudskipper. Compared to some other mudsie species this one is only semi-aggressive. Some mudskippers kill any fish of their own species unless kept in a very big tank.

It also habits very mildly salty waters in the wild. According to the field studies I have read it tends to migrate higher upriver in the delta than many others, and resides in salinities between 1,000 and 1,003 SG.

The latter was great news, since I wanted to try to keep some plants in the tank to add to the natural look of it.

Mosses grew in nicely:

Later some submersed plants like Vallisneria and Nymhaea

But the real strike of luck was to find some Samolus valerandi

Samolus grows like weed, is constantly blooming

and even sets seed and makes seedlings and little pups like crazy:

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