Sos About arowana and oscars

dr exum

Goliath Tigerfish
MFK Member
Sep 29, 2007
1,532
1,423
179
41
Northwest
sounds good,

think it happens frequently
 

Red Cichlids

Plecostomus
MFK Member
Jul 27, 2019
164
176
51
Sacramento
Oscars are predatory and grow really fast, so I would tend to stick to arowanas about 2x-3x their length. 4" oscar means 8-12" arowana. An arowana has such a streamlined body as young fish that they can fit in the mouths of other young predators. Someone on here posted that they lost an 8" arowana to a 3-4" redtail cat, or a similar ratio. I've seen 4" oscars eat goldfish not much smaller than 2", and probably about the same body depth as a 6" arowana.

Don't do it.
 
  • Like
Reactions: Joshuakahan

Mr.Namoc

Feeder Fish
Jul 12, 2020
3
2
3
23
Oscars are predatory and grow really fast, so I would tend to stick to arowanas about 2x-3x their length. 4" oscar means 8-12" arowana. An arowana has such a streamlined body as young fish that they can fit in the mouths of other young predators. Someone on here posted that they lost an 8" arowana to a 3-4" redtail cat, or a similar ratio. I've seen 4" oscars eat goldfish not much smaller than 2", and probably about the same body depth as a 6" arowana.

Don't do it.
so i need to buy 5 inches arowana and 1-2 inches oscar ??
 

Red Cichlids

Plecostomus
MFK Member
Jul 27, 2019
164
176
51
Sacramento
so i need to buy 5 inches arowana and 1-2 inches oscar ??
That would be better, but you should still be careful to be sure the arowana is keeping it's lead on the oscar. Oscars grow so fast that in three months you might have a 6" oscar and an 8" arowana, which could be a problem.
 

tlindsey

Silver Tier VIP
MFK Member
Aug 6, 2011
16,421
14,378
1,645
Ohio
Silver Arowana grow fast also lol but are fragile until it grows to about 8 inches and larger.
 

ethnics

Piranha
MFK Member
Aug 18, 2006
2,879
29
81
35
SouthEast SD
people do it, but not my cup of tea. whoever grows slower may end up being eaten. or it could be totally fine. if you are okay with those odds, have at it. maybe i just like aros more so i wouldn't do it.
 
  • Like
Reactions: tlindsey

Jacob92677

Dovii
MFK Member
Oct 16, 2019
337
539
100
Orange County CA 🇺🇸 USA 🇺🇸
Lots of factors in this answer
like tank Size ,decor , tank mates all can effect out come but an example
I keep a 19 inch arrow with a 5 inch Oscar
There in a 300 tank with maybe 5 other fish under 8 inches all get along find
In most cases you’d be fine but not all
As in a 12 inch arrowana and a 2-3 inch Oscar
Hope it helps
 
zoomed.com
hikariusa.com
aqaimports.com
Store