Spawning Mantis Shrimp — Deep
Built off the proven BV Mantis Shrimp platform, this variation adds a high-visibility spawn sac that turns an already effective pattern into a trigger fly when fish are keyed in on eggs and vulnerable crustaceans.
The added hotspot gives fish a clear target, especially in low visibility or pressured conditions. It still rides hook point up and gets down fast, but now carries just enough flash and contrast to stand out without looking unnatural.
- BV Mantis Shrimp foundation with added spawn sac trigger
- Egg cluster hotspot increases visibility and strike focus
- Hook point up design to fish confidently around structure
- Weighted to provide stability and sink rate suitable for deep water applications
| Feature | Detail |
|---|---|
| Pattern Type | Trigger fly with spawn sac |
| Design | Hook point up, weighted for deep water |
| Visibility | High-contrast egg cluster hotspot |
| Use Case | Deep water, low visibility, pressured conditions |
FAQ
What makes the spawn sac different from the original BV Mantis Shrimp?
The spawn sac adds a high-visibility egg cluster hotspot that increases strike focus, especially in low visibility or pressured conditions, making it easier for fish to target the fly.
Is this fly suitable for deep water fishing?
Yes, it is weighted to provide stability and sink rate suitable for deep water applications, with a hook point up design that allows confident fishing around structure.
Does the fly look natural in the water?
The fly carries just enough flash and contrast to stand out without appearing unnatural, maintaining a natural profile while providing clear visibility to fish.

Brandon Murray –
Used this fly in deep water during a cold front. The spawn sac really stood out in low visibility, and fish were consistently taking it. It sinks steadily and doesn’t drag, which is perfect for structure fishing.
Diane Clarkson –
Great addition to my deep water kit. The egg cluster hotspot works well when fish are active around spawn areas. A bit more visible than the original, but still looks natural in the water.
Virginia Jones –
Fished this in pressured conditions with poor visibility. The trigger action worked well—fish were clearly targeting the spawn sac. Hook point up design made it easy to cast and retrieve.