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Cynodonichthys pacificus

Cynodonichthys pacificus

Cynodonichthys pacificus© FishBase (CC BY-NC)

Cynodonichthys pacificus is a small tropical killifish reaching about 7.5 cm. It inhabits shallow freshwater streams and ponds and is popular among hobbyists for its bright colors rather than as a sport or food fish.

Fight
Taste

Basic Information

Family

Rivulidae

Max Size

7.5 cm

Habitat

freshwater

Climate

tropical

Best Season

Year‑round, with peak activity during the rainy season (May‑September)

Best Time

Early morning and late evening

Distribution

No distribution map available

Fishing Tips for Cynodonichthys pacificus

  • Use a ultra‑light 4‑5 ft spin rod with a 1‑2 lb test line
  • Present live micro‑bait such as mosquito larvae or daphnia on a tiny hook (size 8‑10)
  • Fish near surface vegetation or over shallow riffles where the fish feed
  • Keep the presentation very gentle; a light float or slow jig works best

Top Fishing Locations for Cynodonichthys pacificus

Rio Claro

Costa Rica
beginner70% Very Common

Clear mountain stream in the Monteverde region known for abundant populations of Cynodonichthys pacificus in shallow riffles.

Best: June-September

Río San Juan

Nicaragua
intermediate55% Common

Large lowland river bordering Costa Rica, featuring slow‑moving pools and dense vegetation favored by the species.

Best: May-October

Cañón del Chiriquí

Panama
intermediate45% Occasional

Steep canyon streams in western Panama offering clear water and rocky substrates where the fish thrive.

Best: July-October

Lake Arenal

Costa Rica
beginner65% Common

High‑altitude reservoir with numerous tributary streams that host thriving Cynodonichthys pacificus populations.

Best: May-September

Río Guayas

Ecuador
expert30% Occasional

Large river system on the Pacific coast where the species is found in its tributary streams and floodplains.

Best: December-March

Pacific Coastal Streams near Santa Elena

Ecuador (Galápagos Islands)
expert20% Uncommon

Remote coastal streams on Santa Cruz Island, a bucket‑list destination for killifish enthusiasts seeking pristine habitats.

Best: January-April

Market Prices

Recommended Fishing Equipment for Cynodonichthys pacificus

Recommended Equipment

RodUltralight spin rod, 4‑5 ft, fast action
Line1‑2 lb test monofilament or fluorocarbon
Lure TypeN/A
TechniqueLight float fishing or gentle bottom jigging

Best bait: Mosquito larvae, daphnia, or tiny pieces of worm