rhom or spilo/mac?

  • We are currently upgrading MFK. thanks! -neo
Hmmm.... id'ing juvenile serras from a picture alone, will always be more guess than fact.
It could be a rhomb. But the terminal band on the caudal-fin seems somewhat transparent, this could point towards S.sanchezi.
I also see some oval appearing spots on this specimen, this along with the coloration of the gill-covers and analfin, could tell it's a S. gibbus if it's from the Rio Araguaia, and if the terminal band of the caudal-fin is only obscured by the quality of the picture.

It all depends on origin, and present size of the fish.
 
PiranhaBoss.dk;1085495; said:
Hmmm.... id'ing juvenile serras from a picture alone, will always be more guess than fact.
It could be a rhomb. But the terminal band on the caudal-fin seems somewhat transparent, this could point towards S.sanchezi.
I also see some oval appearing spots on this specimen, this along with the coloration of the gill-covers and analfin, could tell it's a S. gibbus if it's from the Rio Araguaia, and if the terminal band of the caudal-fin is only obscured by the quality of the picture.

It all depends on origin, and present size of the fish.

so why are you guessing sanchezi or S. gibbus? lol

Diffinetly not a sanchezi and too high back for a gibbus

anyways try to find out where it was collected.
 
Hmmm.... I was not really guessing, just listing what my eyes see.
Remember, when a picture is scaled up or down, the ratio may change too, this will often give the object a, more or less, elongated and hig-backed appearance.
Even a PC-monitor may make a picture different from real life on it's own.

I suspect this particular specimen to be a s. rhombeus- variant.
I too have a fish appearing much the same, making it either a S. gibbus or a S. rhombeus, but as the given origin is doubtfull to me, only time will let me know, if ever.
 
Unless you know what is the collection point..I would point out to be a rhomb.

not a gibbus and way to off to be a Sanchazis
 
MonsterFishKeepers.com