Puffer questions that have been bugging me

The1and only

Feeder Fish
MFK Member
Oct 6, 2008
543
1
0
San Diego
So a few years ago I got an Mbu from a LFS and thought he was only at the fish store for a month or two, well it turned out he had lived in a 20g at the store for over a year. I knew it was a down hill battle but I could provide a better life in my 240 then in the 20 it was in. My Mbu was about 4 inches and lived in a 60g grow out for 8 months or so and only grew on inch so I put him in the 240 and he still only grew a little and was a constant battle to feed. After he passed I considered a Fahaka. The LFS I go to refuses to sell Fahaka's yet will sell an Mbu if you have a 240 or larger and has a client that houses a 18" Mbu in a standard 240. I still plan on getting another Mbu and my 240 is just a grow out for his eventual home. I cannot forget the conversation I had with the LFS and diffrent things I have researched since loosing my Mbu.

1. I constantly see people recommend a 120 for a Fahaka for life yet instantly go to 1000 gallons for an Mbu. I really think the Fahaka tank size should be increased to a few hundred gallons. My thinking is that a wild Fahaka gets to be 24" where a wild Mbu will be 40". Why is it a fish half the size has the standard recommendation of 1/8 the tank. Also from what I have read and observed a Fahaka is a way more active fish. The activity level alone should demand much larger than a 120.

2. On tank size I always thought it peculiar that Shedd aquarium kept their Mbu in a tank no more than a 4' square box. They may have moved it since I was their a few years ago and the tank was large but had a lot of decorations and background the restricted the movement of the fish. Just curious if anyone else has noticed this.

3. I know it is true for Discus but thought why not it be true for other fish such as the Mbu and Fahaka. Discus need constant large water changes during their growing phase not only becasue they liek prestine water but because the fish secrete a chemical that helps them adapt to the size of water they are being kept in. I know it is always said that to get a fish to grow one should feed heavy and with heavy feedings comes large water changes. I am thinking their is more to it and has something to do with secretion of chemicals just like in Discus. My Mbu was severely stunted and I did religious, and excessive water changes on the 60 gallon which is the only time I got any real growth out of him. In the 240 I cut back my water change schedule to 25% a week and always had good parameters. I am thinking that since he was so stunted from living a year in a 20g at a LFS he probably need much larger water changes more frequently to maybe deplete the chemical from his body.

I am in no way trying to start a flame war, I just have had these questions in my head for a few years now and would like to hear from people with real world experience on these questions.
 

MonsterMinis

Feeder Fish
MFK Member
Apr 28, 2009
6,048
11
0
Wisconsin
1 and 2 I can't really comment on since my Fahaka is only 3" atm. other then to say I keep a fairly wide variety of "oddball" fish in my collection. some are very young yet but I am finding there is alot of half-truths and flat our wrong information on alot of these species. MFK has been the big "knowledge breaker" for me in I've gotten alot of information both in people agreeing with eachother or strongly debateing things.. and you'll find in all of it somewhere is the truth, or as close as you can come to it.

3 is a different issue completely.. and the concept stands imo and should be founded for all species of fish as a general rule. there are liekly species that do not exude a hormone.. but with that being said replaceing water is the only way to truely balance a tank imo to date. we haven't cracked the nut-shell in the hobby yet how to remove and add vital nutrients to the water to simpley "top off" our tanks and be good pet owners imo.

I think the issues you had with your Fahaka where likely stunted to a level where the fishes skeletal structure was compromised.. and in stunting once this amount of toxins if you will builds up you can do nothing I am aware of to reverse the effects.

btw I do plan on a 120 for my fahaka but if needed I will certainly upgrade his tank. I think haveing a good idea of what size tank you'll need is always good to recon with.. but if the costs of a 120 verse a 180 or larger keeps you from mainatining a pet.. you likely shouldn't be getting said pet, it's not common but occasionally a tank seal will blow.. to be so tight finacially as to not be able to "wing it" and get soemthing if need be goes into a relm outside fishkeepeing.. but does lay some thoughts to it. and not all peopel share my sentiment. BUt thats where I stand in reguards to my pets.

and I have never seen a 24" Fahaka 'nore a 40" mbu.. rumors... no proof.
 

Fat Homer

Mmmmm... Doughnuts
Staff member
Moderator
MFK Member
Mar 16, 2009
9,424
3,684
478
----
Fahakas normally reach about 17" and MBU's around 30" if i remember correctly?

As for tank sizes... i keep my 13" fahaka in a 200G tank... been in there since she was a 1" little thing... But i do agree that i sometimes think a 125G maybe a bit small in the long run? but then i haven't been keeping puffers for as long as some of the more experienced members here such as Puffer Punk...
 

Pufferpunk

Fire Eel
MFK Member
Aug 11, 2007
5,683
6
62
65
Chicago
www.**************.com
Keep in mind, the mass of the mbu is much larger than the fahaka, not just the length. II do agree, we should update the minimum tank size for the fahaka.
 

The1and only

Feeder Fish
MFK Member
Oct 6, 2008
543
1
0
San Diego
My main thing is not the tank for an Mbu but the size for the more active Fahaka that is half the size.

As for the chemical secretion I was reading that it is more prevalent in river fish than ones that live in lakes. So Discus and Clown Loaches secrete a lot of it. Where as fish that come from ponds don't do it as much. So I am assuming both Mbu and Fahaka will secrete more than usual amounts of this chemical as well. This also seems to be only the case for fresh water fish, Marine species don't secrete the chemical from what I have read.

The main point is I think the Fahaka tank size should be increased and the reason for water changes should be expanded. With modern filtration some are not even doing water changes because it is deemed unnecessary if their tank parameters are in check.

Also for those that have full grown Fahakas in a 120 do you notice more or less activity and aggression as the fish grew?
 
zoomed.com
hikariusa.com
aqaimports.com
Store