How do you measure your fish?

Deadeye

Redtail Catfish
MFK Member
Aug 31, 2020
4,623
5,461
154
I usually eyeball it. Using fish I know the length of or based on the width of the tank to compare with. Or I’ll put a ruler against the glass and hope they swim past slow enough to see lol.
Gotten easy with the leporinus as he is half blind.
For a few fish I’m curious about, I’ll measure them after they die:
394AC3CA-6CDC-4DAE-8B02-A052F7A7EC05.jpeg
 

fishguy1978

Redtail Catfish
MFK Member
Mar 30, 2020
1,328
2,106
154
Washington
Grid drawn on the front glass with 1in between each mark.
PXL_20210507_003241404.MP.jpg
 

Deadeye

Redtail Catfish
MFK Member
Aug 31, 2020
4,623
5,461
154

esoxlucius

Potamotrygon
MFK Member
Dec 30, 2015
2,597
7,151
164
UK
I wait until it’s water change day and they are helplessly submissive on their sides in about 2 inches of water 😂

my male synspilum/melanura is 10 inches

View attachment 1468406View attachment 1468407
I measure them with a professional tailors measuring tape. Their girth measurement is quite easy, their inside leg not so much!!

Reminds me of that 4 foot tetra I caught the other day...
View attachment 1468426
Are you related to that little fat despot from North Korea!
 
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