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Pike-perch (zander)
Pike-perch (zander) (Sander lucioperca), Limited for children and in pregnancy where it comes from inland waters.. The national eating advice, why it applies, the rules that matter when you catch it, and what the kitchen changes about the numbers.
Where it lives
Turbid, food-rich lowland lakes and warm coastal bays: Peipsi and Võrtsjärv in Estonia, the big southern Finnish lakes, the Archipelago Sea and the shallow Latvian bays. Zander hunts in low light and in cloudy water, helped by a reflective layer behind the retina, so the good fishing is at dusk, at night and on the days the wind has stirred the lake up.
Why the advice says what it says
Zander is a pure fish-eater from a young age, and unlike pike it keeps growing in schools of prey rather than ambushing from cover, so a productive lake produces a lot of large, old zander. That combination — high in the food chain, long-lived, abundant — puts it in the same mercury conversation as pike and large perch, and Finnish advice names it there explicitly. There is a second, quite separate reason zander appears in every rule book: it is the most commercially and recreationally valuable freshwater fish in the region, so its minimum size is a stock-management lever rather than a safety one, and it is among the numbers most often revised. Do not carry a figure in your head from one season to the next, and do not carry one across a border. The eating question and the legal question happen to attach to the same fish, but they are answered by different institutions for different reasons.
The advice
| Who it applies to | What the advice says | Where it comes from |
|---|---|---|
| Children, and people who are pregnant or breastfeeding | Large pike-perch from inland waters: at most one to two meals a month. Named alongside perch and burbot. | Finnish Food Authority (Ruokavirasto) |
| Everyone else | No specific limit; vary your fish rather than eating one species weekly. | Finnish Food Authority (Ruokavirasto) |
The rules
What the rule book says about this fish, described by instrument rather than printed as a number:
- Zander carries a minimum landing size in all three countries, and it is one of the figures most frequently amended — check it for the current season, every season.
- Lake Peipsi is governed by the joint Estonian rules for the shared lake and has its own numbers, separate from the rest of Estonia.
- Bag limits — a cap on how many fish one person may keep in a day — apply in some waters. They are a separate rule from the minimum size and are easy to miss.
- Several waters close for zander spawning in late spring.
In the kitchen
Zander is the region's premium white fillet: firm, almost boneless once the rib cage is out, mild enough that restaurants build dishes around it. It is nearly as lean as pike, so the same warning applies — it is done a minute before you think it is. The prized presentation is skin-on and crisped, which is fine: the mercury is in the muscle either way, so removing or keeping the skin changes nothing about intake.
This is a reference page, not a fishing licence and not medical advice. Minimum sizes, closed seasons, bag limits and licence prices are set per country and per water body and change most years, so no number for them is printed here — each species page says which instrument sets the rule and where to look up the figure for the water you are standing on. If a clinician has given you a fish frequency or a contaminant instruction, that instruction outranks anything on this page.
Nutrition figures
| Per 100 g, raw | Amount |
|---|---|
| Energy | 93 kcal |
| Protein | 19.1 g |
| Fat | 1.2 g |
| Carbohydrate | 0 g |
| Fibre | 0 g |
| Salt | 0.1 g |
| Published row | Walleye pike, raw |
Related published rows:
- Walleye, cooked — 119 kcal per 100 g
Typical round weight for the calculator: 1.5–5.0 kg.
Eating advice: Finnish Food Authority and Swedish Food Agency national advice on Baltic and inland fish. Contaminant ceilings and the Baltic derogation: Regulation (EU) 2023/915; weekly tolerable intakes: EFSA methylmercury (2012) and dioxins/dioxin-like PCBs (2018). Nutrition figures: USDA FoodData Central rows published on this site. Checked 2026-09-06.
Frequently asked questions
Why does the minimum size for zander keep changing?
Because it is a stock-management number, not a safety number. Fisheries managers raise or lower it to control how many fish are removed before they have spawned, and the decision follows the most recent stock assessment. That is also why it differs between a lake, a coastal area and a neighbouring country.
Fish in the same advice group
Pike
Not in pregnancy at all; one to two meals a month for everyone else.
Perch
Small perch is everyday food; large inland perch is limited for children and in pregnancy.
Burbot
Limited for children and in pregnancy; the liver deserves its own caution.
All species compared
The full table, grouped the way the advice groups it.
Eat the fish, log the fish
TempoLife tracks what you actually ate against the same food data linked on this page, so a fish meal shows up in your omega-3, vitamin D and salt totals without a second thought.