OFFLHD

Ontario Freshwater Fishes Life History Database

[OFFLHD @fishdb]

OFFLHD v.5.38. Updated Ontario record weight for Burbot (Lota lota). Total weight 10.45 kg. https://t.co/xbJpKTyVaf
@AFSOntario @ofah

[OFFLHD @fishdb]

OFFLHD v.5.38. Updated Ontario record length and weight for White Sucker (Catostomus commersonii). Total length 61.0 cm. Total weight 2.65 kg. https://t.co/xbJpKTyVaf
@AFSOntario @ofah

[GLFC @LampreyControl]

#DidYouKnow that Atlantic & #GreatLakes #sealamprey play different roles in their food webs? Atlantic sea lamprey coexist with other fish and have natural predators, while Great Lakes sea lamprey typically kill their fish hosts and occupy the role of top predator.
#DYK #SciComm

[OFFLHD @fishdb]

OFFLHD v.5.37. Updated lifespan for Round Goby (Neogobius melanostomus) 5-7 (m); 4-6 (f). Added Ontario record weight (0.100 kg). https://t.co/xbJpKTzsZN
@AFSOntario @IAGLR

[OFFLHD @fishdb]

OFFLHD v.5.36. Updated Ontario record weight for Grass Carp (Ctenopharyngodon idella). Total weight 26.3 kg. https://t.co/xbJpKTyVaf @AFSOntario @FishOceansCAN

[OFFLHD @fishdb]

OFFLHD v.5.36. Updated Ontario record length for Grass Carp (Ctenopharyngodon idella). Total Length 125.7 cm. https://t.co/xbJpKTyVaf @AFSOntario @FishOceansCAN

[OFFLHD @fishdb]

OFFLHD v5.36. Updated Ontario range and distribution map for Grass Carp (Ctenopharyngodon idella). Range extended north in Lake Huron. https://t.co/xbJpKTyVaf @afs_oc @afs_oc_su @FishOceansCAN @CARSAFS

[OFFLHD @fishdb]

OFFLHD v.5.34. Updated COSEWIC status for Pugnose Minnow (Opsopoeodus emiliae) to Endangered (May 2025). https://t.co/xbJpKTyVaf @afs_ontario @cosewic

[OFFLHD @fishdb]

OFFLHD v.5.34. Updated photograph for Pugnose Minnow (Opsopoeodus emiliae). https://t.co/xbJpKTyVaf @afs_ontario

[Hidden Below: The Great Lakes @HiddenBelowFilm]

🔦 What mysteries lie in the deepest depths of the #GreatLakes? 🐟 Meet the elusive #DeepwaterSculpin, adapted for life in the cold, dark waters. See this alien-like world up close✨ Stream "All Too Clear" FREE across Canada on Oct 25 or broadcast Oct 26 at 7 PM on @tvo @TVOdocs

[OFFLHD @fishdb]

OFFLHD v.5.32. Updated photograph for Emerald Bowfin (Amia ocellicauda). https://t.co/xbJpKTyVaf

@afs_ontario

[OFFLHD @fishdb]

OFFLHD v.5.32. Updated Ontario record length for Green Sunfish (Lepomis cyanellus). Total Length 24.1 cm. https://t.co/xbJpKTzsZN

@afs_ontario

[Invasive Carp Canada @invasivecarpca]

There have been 5 grass carp captures so far this year! Learn how to ID and report grass carp here: https://t.co/7zPwYtrxJT

[Toronto and Region Conservation Authority @TRCA_HQ]

Exciting discovery: #SpottedGar found in Toronto waters! During a recent night electrofishing survey, TRCA made an incredible find - a Spotted Gar! This marks the first record of this fish species in over 30 years of waterfront fisheries surveys in the region.

The Spotted Gar is both an #endangered and unique native fish, known for its long snout and spotted body. This ancient and primitive fish species has the ability to breathe air, and its sharp teeth demonstrate its role as a top predator.

This discovery underscores the need to continue to monitor and understand the biodiversity of our local waters so we can make informed decisions about how to best safeguard habitat for fish communities.
Stay tuned as we continue to explore and protect Toronto regional waters. To learn more about our long-term waterfront fisheries surveys, visit: https://t.co/Zbv2mcgytd

[OFFLHD @fishdb]

OFFLHD v5.31. Updated Ontario range and distribution map for Spotted Gar (Lepisosteus oculatus). Range includes the Grand River. https://t.co/xbJpKTyVaf
@afs_oc @afs_oc_su @CARSAFS

[OFFLHD @fishdb]

OFFLHD v5.30. Updated Ontario range and distribution map for Blackfin Cisco (Coregonus nigripinnis). Range includes four lakes (Cedar, Hogan Mink, Radiant) in Algonquin Park. https://t.co/xbJpKTyVaf @afs_oc
@afs_oc_su @CARSAFS

[OFFLHD @fishdb]

OFFLHD v.5.30. Updated Ontario record size for Grass Carp (Ctenopharyngodon idella). Total Length 116 cm. Weight 20.996 kg. https://t.co/xbJpKTyVaf @OODMag @ofah @afs_oc @afs_oc_su

[OFFLHD @fishdb]

OFFLHD v5.29. Updated photograph for Atlantic Salmon. Thanks @nichole_wiemann https://t.co/xbJpKTyVaf @afs_oc @CARSAFS

[Invasive Carp Canada @invasivecarpca]

In shallow waters or when swimming close to the surface, Grass Carp can be easily identified if you know what features to look for.

Click here to learn more about Grass Carp identification and how to report suspected sightings: https://t.co/OLydZYy7gc

[OFFLHD @fishdb]

OFFLHD v5.28. Updated photograph for Lake Trout. https://t.co/xbJpKTyVaf @afs_oc @CARSAFS