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Tripletail (blackfish) are found worldwide in
tropical and warm waters.
Occur in northern Gulf waters
generally from April through
October.
Primarily a recreational
fishery in NGOM
- MRFSS/MRIP
- stock status
- management
Photo: Sonny Schindler, Shore Thing Charters
• Volunteer anglers provided with tagging materials
• tag applicator
• instruction booklet
• tagging data cards
• 3.0-in dart tag
Hallprint (Australia) Dart Tags
New Mailing Address
703 East Beach Drive
Ocean Springs, MS 39564
• Please take accurate
measurements.
• Release the fish as soon as
possible after measuring
and tagging.
• Record all pertinent data on
the data card after releasing
the fish.
• Store the data cards in a
safe place.
• Return the data cards by
mail to us within a timely
manner.
19.25-inch tripletail tagged & released off Bayou Caddy, MS (1 Aug 2007)
Photo: Doug Olander, Sport Fishing Magazine
SPORT FISH TAG & RELEASE RECAPTURE REPORT
July 11, 2012 – The following information pertains to a tripletail which was tagged, released and later
recaptured. We thank you for your participation in this important research and wish you the best in
your fishing endeavors.
Movement Details for Tripletail – T7227
TAG/RELEASE INFORMATION
Date: 22 Jul 2011 Location: 1 mile west of West Pass, Apalachicola, Florida
Total Length: 13.0 inches Angler: Kevin Caldwell
RECAPTURE INFORMATION
Date: 05 Aug 2011 Location: Port St. Joe, Florida
Total Length: ~ 14.0 inches Angler: Nick Honachefsky
Weight: n/a Days Out: 15 Distance Traveled: 35 miles
Comments: Recapture length was estimated. Thanks for your assistance – Read.
THE UNIVERSITY OF SOUTHERN MISSISSIPPIGulf Coast Research LaboratoryCenter for Fisheries Research & Development
703 East Beach DriveOcean Springs, MS 39564
228-872-4202 [email protected] PARTNERSMississippi Department of Marine Resources
USFWS Sport Fish Restoration Program
%U
#S
Gulf of Mexico
= Tag Location
= Recapture Location
#S
%U
• If a fish you tag is
recaptured in the future
and reported to us, you will
receive a Recapture
Report detailing the
movements and growth of
that fish.
• So, be sure to send in your
data cards; we have
several instances of
recaptured fish for which
we do not have the
corresponding tagging
data.
• 2,650 tripletail tagged and released
• Annual recapture rates vary from 8% - 11%
• Angler participation from Texas to Georgia
• Majority of data based on fish tagged and
recaptured on both coasts of the FL peninsula
%U
#S
#S
#S
%U
104 days
MarJun
89 days
FebMay
208 days
AugFeb
%U
#S
N
Gulfof
Mexico
= tag location
= recapture location
21 Aug 2005
6.75 in TL
28 Jun 2006
~12.00 in TL
Interesting Local Movement: Our Katrina Fish
Interesting Local Movement: Our Katrina Fish
%U#S
$T
N
Gulf of Mexico
= tag location
= 1st recapture location
= 2nd recapture location 07 Jun 2009
21.0” 10 Jul 2009
22.0” 01 Aug 2009
23.0”
Specimens sampled/examined
Sex
• Males: n=186, 7 - 27 in. TL, 0.4 - 18 lbs. TW
• Females: n=245, 7 - 31 in. TL, 0.2 - 29 lbs. TW
Age range (estimated ages*)
• Males: <1 - 6 years
• Females: <1 - 6 years
0.0
5.0
10.0
15.0
20.0
25.0
30.0
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0
Total Length (inches)
Tota
l W
eig
ht
(lbs)
Franks et al., 2001
Testes
Ovaries
Tripletail
Gonodal-Somatic Index (gonad weight - body weight ratio)
Indicates spawning from June to August with
peak spawning in July.
N = 123
N = 161
Late stage (ripening) ovaries Histology
Histological Assessments
• Spawning season as June – August
• Peak spawning in July
• Female ‘Size at 50% Maturity’ = 17.6 inches TL
• Female ‘Size at 100% Maturity’ = 19.7 inches TL
• Male ‘Size at 50% Maturity’ = 10.6 inches TL
300
400
500
600
700
800
900
0 1 2 3 4 5 6
Age (year)
To
tal L
en
gth
(m
m )
Males
18
14 30
2 9 1
12
16
20
24
28
32
36
Tota
l Leng
th (
inches)
Estimated Age (years)
300
400
500
600
700
800
900
0 1 2 3 4 5 6
Age (year)
To
tal L
en
gth
(m
m )
Females
19
27
38
6
10 1
12
16
20
24
28
32
36
To
tal L
en
gth
(in
che
s)
Estimated Age (years)
• Increasing popularity
• Status of the tripletail stock is unknown
• High recapture rate indicates high susceptibility
capture by hook-and-line
• A species of fisheries interest should be protected
from harvest until a significant portion of it’s
population (at least 50%) becomes mature and has
the opportunity to spawn.
MSL (in) DBL MSL (in) DBL
Florida 15 2 15 10
Alabama 16 3 16 3
Mississippi ▬ ▬ ▬ ▬
Louisiana ▬ ▬ ▬ ▬
Texas 17 3 17 3
Georgia 18 2 18 5
Recreational Commercial
18 3 18 3
Fertilization, Hatching & Larval Survival
Larvae - 20 hrs old Larvae - 2 hrs old Embryo - 20 hrs old
Sex determination via blood analysis
Cryopreservation of sperm for captive
spawning
Angler cooperative tag and release
Mississippi Department of Marine Resources
U.S. Fish and Wildlife Service,
Sport Fish Restoration Program
Darden Restaurants, Inc.
Gulf Coast anglers and volunteer taggers
Gulf Coast Research Laboratory colleagues
