"Not the flashy sailfin, but the shortfin molly will mow the algae off your pilings and drop live fry in your bucket before you cinch the knot." - Eddie Ramos
Quick Facts
Average Size
2–4 inches
0.01–0.04 lbs
World Record
Habitat
Freshwater And Brackish Waters
Best Techniques
Light Tackle With Small Nets
Best Baits
Algae And Small Invertebrates
Challenge Score
Explorer: 34
< Explore This Species >
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🔥Shortfin molly populations shrug off hydrogen sulfide near 300 µM-water that kills most fish in minutes.
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02Cave descendants look like mini ghost fish-pale bodies and noticeably shrunken eyes.
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03When water goes anoxic, they surf the meniscus, skimming the top microlayer like tiny snorkelers.
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04Females carry multiple broods simultaneously; babies drop in batches, not one-and-done.
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05Males switch tactics in sulfur caves-less courtship, more drive‑by gonopodium jabs to beat bird patrols.
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06Cross a surface male with a cave female and the hybrids struggle the moment sulfur spikes.
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07Newborns from toxic springs are chunky for their size-extra fuel tanks for brutal first days.
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08This species evolved sulfide tolerance independently in separate drainages-same superpower unlocked multiple times.
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09In darkness, mate choice runs by smell; females literally sniff out the right guy.
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10Heads get proportionally larger in low‑oxygen water, boosting gill surface like bolting on bigger intakes.
Learn Real Facts — Choose Your Vibe
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How Big Do Shortfin Molly Get?
Common Catch
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Trophy Fish
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World Record
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Length
Small
Weight
Small
Top Fisheries for Shortfin Molly
Best places to catch Shortfin Molly and how far they are from you.
From iconic trophy waters to bucket-list destinations, these are some of the best places on the planet to target Shortfin Molly.
Tamaulipas/Veracruz
, Mexico
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Miles
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Río Papaloapan
Veracruz
, Mexico
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Miles
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Río Coatzacoalcos
Veracruz
, Mexico
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Miles
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Centla Wetlands
Tabasco
, Mexico
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Miles
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Laguna de Términos
Campeche
, Mexico
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Miles
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Seasonality Chart
Best months to catch Shortfin Molly: May
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Shortfin Molly Intelligence
Fishing Window
Great
Target Now
Season Score
67/100
Trend
Declining
Peak Season In
8 Months
Difficulty Meter
34
Explorer
Beginner Friendly
Feeding Triggers
Time of Day
Very High
Temperature
High
Current
Moderate
Weather
High
Most Important:
Time of Day
Behavior
Shortfin Molly
Behavior
Behavior Profile Radar
Strike
Shortfin Molly
Strike
Strike Profile Radar
Positioning
Shortfin Molly
Positioning
Positioning Radar
Fight
Shortfin Molly
Fight
Fight Radar
Species Comparison Selector
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Shortfin Molly Advice
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Where to Find Shortfin Molly
Preferred Structure
Wood
Rock
Weeds
Undercuts
Depth Breaks
Water Column
Surface
Mid
Bottom
Cover vs Roam
Cover
Roam
Gear Loadout for Shortfin Molly
A reliable starting setup for targeting Shortfin Molly, based on typical size, habitat, and presentation style.
Core Setup
- ROD 7' ultralight spinning rod
- REEL 1000 size spinning reel
- LINE 4 lb monofilament
- LEADER 2 to 3 lb fluorocarbon, 18 to 24 in
Lures & Baits
- size 20 to 26 hooks
- micro jigs 1/100 to 1/64 oz
- tiny bread or shrimp bits
- mosquito larvae
- small midge nymph flies
Tactical Notes
- sight-fish shallow vegetated edges and quiet backwaters
- use a small float or single split shot
- chum lightly with breadcrumbs
- keep presentations tiny and barely moving
- set the hook gently





