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INTERNATIONAL ZEBRAFISH SOCIETY INC

EIN 47-2772592 MILWAUKEE, WI

Largest nonprofits in Wisconsin

Revenue 2024
$845,766
Expenses 2024
$670,074

Program services were 94.5% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
H20
Classification
1200
Street
555 E WELLS ST STE 1100

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Other organizations at this address

40 other organizations in the IRS Business Master File list the same street address. matched by us

This address is a suite or unit (STE 1100). Organizations that share one are often clients of the same office-services firm, accountant or registered agent rather than related to each other.

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

Mission and programs · 2024

Mission

TO PROMOTE ZEBRAFISH RESEARCH IN EFFORTS TO BETTER HUMAN HEALTH; TO PROMOTE EDUCATIONAL INITIATIVES, PROGRAMS AND FORUMS; TO ADVOCATE ZEBRAFISH RESEARCH AND REPRESENT THE INTEREST OF THE INTERNATIONAL COMMUNITY; TO PROMOTE INTERNATIONAL COHESION AND COOPERATION IN ZEBRAFISH RESEARCH; TO FACILITATE THE EXCHANGE OF INFORMATION AND RESOURCES WITHIN THE ZEBRAFISH COMMUNITY.

  • THE 10TH STRATEGIC CONFERENCE FOR ZEBRAFISH INVESTIGATORS (SCZI) TOOK PLACE JANUARY 6-9, 2024 AT THE ASILMAR CONFERENCE GROUNDS IN PACIFIC GROVE, CALIFORNIA. THERE WERE OVER 200 ATTENDEES AND 180SPONSORS AND EXHIBITORS.

    Expenses $187,475 · Revenue $203,002

  • THE 17TH INTERNATIONAL ZEBRAFISH CONFERENCE (IZFC) TOOK PLACE AUGUST 17-21, 2024 IN KYOTO, JAPAN. THERE WERE OVER 641 IN PERSON ATTENDEES AND 84 VIRTUAL ATTENDEES. THERE WERE 23 SPONSORS AND EXHIBITORS.

    Expenses $413,290 · Revenue $444,212

  • Expenses $32,576 · Revenue $21,403

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Nichole Nikolic

    EXECUTIVE DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Feng Liu

    PRESIDENT

    Total calculated
    $0
    Hours/week
    1

  • Cecilia Moens

    PRESIDENT ELECT

    Total calculated
    $0
    Hours/week
    1

  • Mary Goll

    SECRETARY

    Total calculated
    $0
    Hours/week
    1

  • Han Wang

    TREASURER

    Total calculated
    $0
    Hours/week
    1

  • Wael Mohamed

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Suresh Jesuthasan

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Vatsala Thirumalai

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Tohru Ishitani

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Yonghua Sun

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Chengtian Zhao

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Filippo Del Bene

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Steffan Schlopp

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Natascia Tiso

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Pascale Bomont

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Monica Vianna

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Marc Ekker

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Florence Marlow

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Kelly Monk

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Mayssa Mokalled

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • Kessen Patten

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $845,766
    Expenses
    $670,074
    Contributions
    $169,075
    Grants paid
    $0
  • 2023
    Revenue
    $92,171
    Expenses
    $133,449
    Contributions
    $88,189
    Grants paid
    $5,999
  • 2022
    Revenue
    $565,225
    Expenses
    $546,984
    Contributions
    $147,325
    Grants paid
    $21,293

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $263,799
    Expenses
    $237,640
    Assets (EOY)
    $421,036

  • 2020 · 990

    Revenue
    $152,769
    Expenses
    $146,431
    Assets (EOY)
    $393,839

  • 2020 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2019 · 990

    Revenue
    $82,013
    Expenses
    $211,084
    Assets (EOY)
    $440,311

  • 2018 · 990

    Revenue
    $890,166
    Expenses
    $588,344
    Assets (EOY)
    $439,844

  • 2017 · 990-EZ

    Revenue
    $199,698
    Expenses
    $214,075
    Assets (EOY)
    $174,915

  • 2016 · 990-EZ

    Revenue
    $31,597
    Expenses
    $31,311
    Assets (EOY)
    $271,119

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.