TUI CHUB INSIGHTS:   The chubs scope differently than the trout do and are pretty easy to determine on your screen.  Generally, they stack up and are very thick in zones of the lake that have dissolved oxygen levels too low to support trout.  When spawning in the depths in early summer, they can also form a 5ft thick layer just above the bottom in 30-40+ft of water.  Mostly, any large stacked school  or blob of fish that the top is at 7ft and the bottom is at 47f+t are NOT trout. We caught some chubs 22″ long in 2016 and again in late July 2017, my biggest in 2018 has been 21″.  Huge monsters for chubs so they are doing very well….maybe too well considering the biomass and fewer trout being planted.  With a little more spawning habitat back for the chubs up north, we saw another prolific hatch of chubs.  I believe their population density is going to bite us in the ass if it hasn’t already.  They’re over populated.  I see this becoming a very bad problem for this lake now.  People don’t come here to catch trophy tui chubs.  Not good.

 

Tui chubs are in 3 separate and distinct schools.  Here’s how I classify them.  Stage 1:  Adult spawners. We have two schools.  One school spawns in the northern basins and the other doesn’t leave the south basin.  During the dry years up north, we had one year of lower spawning rates due to habitat loss & the northern spawners not knowing where to go to spawn in the south basin.  But the next year they had it figured out and our tui chub spawn took off with a vengeance.  We had little to no grebe nesting 2011-2016 so the tui chubs had very few predators to keep the young of the year in check for 4+ years.  These are now all in stage 2 juveniles and rarely targeted by trout, too large for a grebe and now very wary to pelicans.  Stage 2: The nursery or juvenile population. (Several years worth that are protected by sub adults I call guardians).  I have seen these “guardians” rush out of the school and slam a passing trout like a linebacker.  Which is pretty brazen for a fish with no teeth and half the size.  But numbers count and generally there is more than one guardian rushing the trout.  Stage 3: Young of the year.  This is what the trout target.  When the adults spawn they can form a thick line protecting the beds before they disperse.  Once the young of the year complete the hatching cycle (which can last through August/September) we can see the schools of stage 1 and 2 form walls protecting the young of the year minnows.  Generally we will see the minnows in closer to the shoreline, the nursery juveniles outside of the young of the year and the adult spawners outside of the nursery.  It really is something to see.  I call it “walling up” and it generally begins around late August/Sept just as there is a hint of fall in the air.  It appears to me that the walling up is the chubs way of protecting their species from the trout.  If we have chubs in those numbers, the trout either find their way into the young of the year schools, or they move on to a different food source until the chubs disperse and relax. We can literally smell the tui chubs when near massive numbers.  As they transpire, they release a gas, especially the young of the year when in dense schools.  So follow your nose come late summer and fall.  Look for pelicans in large groups as well as a boiling on the surface.  Out over the depths, the trout push the minnows up to within reach of the pelicans.  So we often follow the birds when we see that.  This year, the pelicans are following us.

 

When fishing, I try to avoid the stacking adult tui chub as well as the nursery chub.  Generally the trout will be further away from the chubs or outside and above the chub school.  If you’re in the chubs, that’s all you’re going to catch.  Easy to determine on your line.  Chubs are tail thruster’s and head down, trout are head shakers and stay up and out even when charging the boat.  Big difference on the rod.  We also have Tahoe suckers (grayish with darker back, small nodes on the lower fins).  Seasonally they can be modeled green back with reddish stripe, late summer they can be a little more on the yellowish green back.  A treasure and rarely seen by anglers.   Please release these in good condition if you catch them as their numbers are low and they are a special species to this lake that don’t complete with the trout. Speckled dace (a minnow that only grows up to remain a minnow).   Generally seen taking harbor near the transom of an anchored boat and various sizes from small to 1- 1 1/2 inches at most.  Mostly in family units from smaller to larger and 50-100+ individuals is a big bunch.

Various zooplankton’s have also become very prolific to the point of fowling lines and downrigger’s…and when thick enough, can plug jet pumps.   The biggest change in the fishing occurred in less than one year.  From catching and releasing tons (20-40+ per day) of 2-3+ lb fish to being lucky to get one or two was a dramatic shift in Eagle Lake in less than one year.  Finding trout in the middle of summer at 17 to 20ft deep at 73F water temps is pretty unnatural but that’s where they were in 2017 when surface temps were above 70F.  We may have seen some 4+lb fish but their numbers being caught were few and far between…lots of 2 to 3 ½ lbs as usual.  This fall we have seen a handful over 5lb but on average, be happy with a 3 1/5lb.   Over 55 years of eating these trout, the best quality of meat comes from a 2-3lb trout.  Meat of the bigger trout of 4 +lbs is generally grainy, mealy and softer.  Everyone wants to catch a big fish, but the quality of the meat is not nearly as good as smaller fish.  Consider that.  I rarely keep a fish over 4lbs for eating as to me, it is a waste if it doesn’t eat as good as a smaller fish but I will smoke it.