Mangrove Jack Growout

Berts46ers

Polypterus
MFK Member
Jun 26, 2018
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316
87
NSW
This is about 2.5 months since I got him.
Probably around 3 inch long.
Eating very well, just feeding raw prawn and squid chunks. And some earth worms from a compost farm.
Feeding once a day.
Running the tank as brackish, approximately 1 tablespoon of salt per 10L of water.35FF5309-6CE6-4398-A27F-8EDC0F26CB39.jpeg75C6E3AC-DAB4-4586-9FCC-EECD037D2141.jpeg
 
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Berts46ers

Polypterus
MFK Member
Jun 26, 2018
123
316
87
NSW
Had the genius idea of giving him some tank mates. 5 silver dollars about 1.5 to 2 inch in size each.
6AACD475-3542-4D87-B66E-1AB78BE55661.jpeg
Thoughts were that him being pretty small, he may tolerate them and leave them alone.
This was going great. He would swim along with them and join their shoal.
They didn’t seem to be scared of him at all.
This lasted about 6 weeks.

Then I wake up to this 1 morning.90FD03F1-928F-47B4-9C91-F1B663C45CF5.jpeg
It must have only just happened, as it was still alive and breathing but could not swim.

I put an add up to sell the other 4. 1 more got killed the next night before the other 3 were sold the following day.
 

Berts46ers

Polypterus
MFK Member
Jun 26, 2018
123
316
87
NSW
This is now about 5 months since I got him.
About 4 to 4.5 inch’s at a guess.
Smashing the food a lot harder now and getting fiesty towards the gravel vac when doing water changes haha.
3030D18D-9870-4B6B-87B1-5232A5AB7FD0.jpeg
Hard to get a good photo of him, always cruising around the tank.
Starting to see his little fangs more now.
Photos don’t do him justice.
211E8E08-1A56-4705-8E13-3C20AC25DA77.jpeg
 

krichardson

Bronze Tier VIP
MFK Member
Jun 19, 2006
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Datnoid Island
....or any other tankmates lol.I have had a few of them over the years and they all got nastier the bigger they grew.
 

Berts46ers

Polypterus
MFK Member
Jun 26, 2018
123
316
87
NSW
....or any other tankmates lol.I have had a few of them over the years and they all got nastier the bigger they grew.
Yeah no more tank mates period.
It’s what I originally planned anyway, but made a stupid decision with the silver dollars.
 

Friller2009

Aimara
MFK Member
Oct 27, 2021
979
1,581
134
Australia
Epic mate! Nice looking jack! My uncle used to have one of these when I was a little kid. Kept fighting with his sooty grunter. They really are a beautiful fish. One of the most aggressive for sure. My uncles one bashed the crap out of his 2+ft Jardinii.
 
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