Hardiest fish species

  • We are currently upgrading MFK. thanks! -neo
Your so right, I chose the koi and carp because of seasonal changes they have to adapt to and they can live a long time.
Out of my 12 original goldfish i have 8 left that survived my beginner mistakes, and i lost 4 of the second group of 8 due to disease:(

Now that my aquaponics is running again they should do fine :)

Goldfish take whatever PH or temperature you give them and they live
 
Out of my 12 original goldfish i have 8 left that survived my beginner mistakes, and i lost 4 of the second group of 8 due to disease:(

Now that my aquaponics is running again they should do fine :)

Goldfish take whatever PH or temperature you give them and they live

Sorry for your loses.
 
Sorry for your loses.
I got used to it now. i lost the first 3 to birds when the tub was improperly covered and the rest just died. i couldn't find or see anything wrong, unless they were simply too far gone after IP which i treated for 8 days prior.

They seemed to be healthy.


Bettas are also pretty hardy too it seems. i look after mine well but they seem to be able to take some punishment from beginners
 
I would have to say convict cichlids, Ive put countless adults and babies through the ringer and have had only a handful of fatalities. I'm talking thousands upon thousands of babies over the years on multiple hour road trips in a mason jar, ph swings, tank crash, i use them to cycle tanks, power outages for
days, even a faulty heater and an Oscar attack on my now 8 year old male. Oscar had him with just the tail sticking out, looked back a little later and the little dude was fighting the Oscar again, lol.
 
*Eels these can go without food for more than 6 months.
*Snakehead this fish can survive on land for hours and if it find a place that wet enough they can live like that for days. Here is a picture of fresh snakehead in our daily market and they alive entire day without fully submerge in water.
6604106955_3d327fc8e3_b.jpg
 
*Eels these can go without food for more than 6 months.
*Snakehead this fish can survive on land for hours and if it find a place that wet enough they can live like that for days. Here is a picture of fresh snakehead in our daily market and they alive entire day without fully submerge in water.
View attachment 1214140
Snakehead are tough, but not to shifting water chemistry apparently. too large of a water change and they can kill their mate apparently
 
But can eels and snake heads survive quick, huge ph and temp swings, high ammonia, nitrite, nitrate levels, 0 water movement for days and fight of fish 5-6 times it's size.
 
But can eels and snake heads survive quick, huge ph and temp swings, high ammonia, nitrite, nitrate levels, 0 water movement for days and fight of fish 5-6 times it's size.
Eels and snakehead don't need current to survive, I'm not sure about water chemical swing cause I'm never dare to try that lol (My Tesselata Moray lived in 160+ppm of Nitrate for at least a year before I found out carbon dosing method in saltwater to reduce Nitrate to 0ppm).
*There is a story a guy stressed out when all his fish died while he's away from home and let someone else take care his tank (saltwater), he came home and just took out the dead fish and leave the tank untouch, until 8 months later he's found out that a skeletor eel still alive in there without food, extremely high salinity water, no light, no water movement. :P
 
MonsterFishKeepers.com